diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 405225011cdd..2847bfd578b9 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -122,7 +122,7 @@ jobs:
     runs-on: [self-hosted, Windows]
     if: "(
            github.event_name == 'push'
-           && github.ref != 'refs/heads/master'
+           && github.ref != 'refs/heads/main'
          )
          || (
            github.event_name == 'pull_request'
diff --git a/.github/workflows/scaladoc.yaml b/.github/workflows/scaladoc.yaml
index 080b77fcb054..50c8009f3e8e 100644
--- a/.github/workflows/scaladoc.yaml
+++ b/.github/workflows/scaladoc.yaml
@@ -13,7 +13,7 @@ jobs:
            && !contains(github.event.pull_request.body, '[skip docs]')
          )
          || contains(github.event.ref, 'scaladoc')
-         || contains(github.event.ref, 'master')"
+         || contains(github.event.ref, 'main')"
 
     steps:
       - name: Git Checkout
@@ -82,7 +82,7 @@ jobs:
          )
          || contains(github.event.ref, 'scaladoc')
          || contains(github.event.ref, 'scala3doc')
-         || contains(github.event.ref, 'master'))"
+         || contains(github.event.ref, 'main'))"
 
     steps:
       - name: Git Checkout
diff --git a/README.md b/README.md
index 991d6842acdc..fa564654fb38 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 Dotty
 =====
-[![Dotty CI](https://github.com/lampepfl/dotty/workflows/Dotty/badge.svg?branch=master)](https://github.com/lampepfl/dotty/actions?query=branch%3Amaster)
+[![Dotty CI](https://github.com/lampepfl/dotty/workflows/Dotty/badge.svg?branch=master)](https://github.com/lampepfl/dotty/actions?query=branch%3Amain)
 [![Join the chat at https://discord.com/invite/scala](https://img.shields.io/discord/632150470000902164)](https://discord.com/invite/scala)
 
 * [Homepage](https://dotty.epfl.ch)
diff --git a/bench/profiles/compiletime.yml b/bench/profiles/compiletime.yml
index df85424c8f56..fd77df7dfe9a 100644
--- a/bench/profiles/compiletime.yml
+++ b/bench/profiles/compiletime.yml
@@ -1,31 +1,31 @@
 charts:
 
     - name: "Compile-time sums of constant integer types (generated)"
-      url: https://github.com/lampepfl/dotty/blob/master/bench/src/main/scala/generateBenchmarks.scala
+      url: https://github.com/lampepfl/dotty/blob/main/bench/src/main/scala/generateBenchmarks.scala
       lines:
         - key: compiletime-sum-constants
           label: bootstrapped
 
     - name: "Compile-time sums of term reference types (generated)"
-      url: https://github.com/lampepfl/dotty/blob/master/bench/src/main/scala/generateBenchmarks.scala
+      url: https://github.com/lampepfl/dotty/blob/main/bench/src/main/scala/generateBenchmarks.scala
       lines:
         - key: compiletime-sum-termrefs
           label: bootstrapped
 
     - name: "Sums of term references, result type inferred (generated)"
-      url: https://github.com/lampepfl/dotty/blob/master/bench/src/main/scala/generateBenchmarks.scala
+      url: https://github.com/lampepfl/dotty/blob/main/bench/src/main/scala/generateBenchmarks.scala
       lines:
         - key: compiletime-sum-termrefs-terms
           label: bootstrapped
 
     - name: "Compile-time sums of type applications (generated)"
-      url: https://github.com/lampepfl/dotty/blob/master/bench/src/main/scala/generateBenchmarks.scala
+      url: https://github.com/lampepfl/dotty/blob/main/bench/src/main/scala/generateBenchmarks.scala
       lines:
         - key: compiletime-sum-applications
           label: bootstrapped
 
     - name: "Compile-time additions inside multiplications (generated)"
-      url: https://github.com/lampepfl/dotty/blob/master/bench/src/main/scala/generateBenchmarks.scala
+      url: https://github.com/lampepfl/dotty/blob/main/bench/src/main/scala/generateBenchmarks.scala
       lines:
         - key: compiletime-distribute
           label: bootstrapped
diff --git a/bench/profiles/empty.yml b/bench/profiles/empty.yml
index ef878e07f50d..ac571e64e831 100644
--- a/bench/profiles/empty.yml
+++ b/bench/profiles/empty.yml
@@ -1,19 +1,19 @@
 charts:
 
     - name: "empty class"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/empty-class.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/empty-class.scala
       lines:
         - key: empty-class
           label: bootstrapped
 
     - name: "empty object"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/empty-object.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/empty-object.scala
       lines:
         - key: empty-object
           label: bootstrapped
 
     - name: "empty file"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/empty-file.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/empty-file.scala
       lines:
         - key: empty-file
           label: bootstrapped
diff --git a/bench/profiles/exhaustivity.yml b/bench/profiles/exhaustivity.yml
index 1dd4f78c5aa8..af6eb4041f6c 100644
--- a/bench/profiles/exhaustivity.yml
+++ b/bench/profiles/exhaustivity.yml
@@ -1,54 +1,54 @@
 charts:
     - name: "exhaustivity check"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/patmatexhaust.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/patmatexhaust.scala
       lines:
         - key: patmatexhaust
           label: bootstrapped
 
     - name: "exhaustivity I"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/exhaustivity-I.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/exhaustivity-I.scala
       lines:
         - key: exhaustivity-I
           label: bootstrapped
 
     - name: "exhaustivity S"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/exhaustivity-S.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/exhaustivity-S.scala
       lines:
         - key: exhaustivity-S
           label: bootstrapped
 
     - name: "exhaustivity T"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/exhaustivity-T.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/exhaustivity-T.scala
       lines:
         - key: exhaustivity-T
           label: bootstrapped
 
     - name: "exhaustivity V"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/exhaustivity-V.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/exhaustivity-V.scala
       lines:
         - key: exhaustivity-V
           label: bootstrapped
 
     - name: "exhaustivity MIPS"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/patmat/i7186.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/patmat/i7186.scala
       lines:
         - key: exhaustivity-mips
           label: bootstrapped
 
     - name: "exhaustivity i12241"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/patmat/i12241.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/patmat/i12241.scala
       lines:
         - key: exhaustivity-i12241
           label: bootstrapped
 
     - name: "exhaustivity i12358"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/patmat/i12358.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/patmat/i12358.scala
       lines:
         - key: exhaustivity-i12358
           label: bootstrapped
 
     - name: "exhaustivity i13565"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/pos/i13565.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/pos/i13565.scala
       lines:
         - key: exhaustivity-i13565
           label: bootstrapped
diff --git a/bench/profiles/implicits.yml b/bench/profiles/implicits.yml
index d20a99c26461..3e944b5be28b 100644
--- a/bench/profiles/implicits.yml
+++ b/bench/profiles/implicits.yml
@@ -1,6 +1,6 @@
 charts:
     - name: "implicit cache I"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/implicit_cache.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/implicit_cache.scala
       lines:
         - key: implicit-cache
           label: bootstrapped
@@ -8,7 +8,7 @@ charts:
           label: from tasty
 
     - name: "implicit cache II"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/implicitNums.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/implicitNums.scala
       lines:
         - key: implicitNums
           label: bootstrapped
@@ -16,13 +16,13 @@ charts:
           label: from tasty
 
     - name: "implicit scope loop"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/implicit-scope-loop.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/implicit-scope-loop.scala
       lines:
         - key: implicit-scope-loop
           label: bootstrapped
 
     - name: "inductive implicits"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/inductive-implicits.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/inductive-implicits.scala
       lines:
         - key: inductive-implicits
           label: bootstrapped
diff --git a/bench/profiles/misc.yml b/bench/profiles/misc.yml
index 80172fc791ed..668f8e60c176 100644
--- a/bench/profiles/misc.yml
+++ b/bench/profiles/misc.yml
@@ -1,13 +1,13 @@
 charts:
 
     - name: "issue #1535"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/i1535.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/i1535.scala
       lines:
         - key: i1535
           label: bootstrapped
 
     - name: "issue #1687"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/i1687.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/i1687.scala
       lines:
         - key: i1687
           label: bootstrapped
diff --git a/bench/profiles/projects.yml b/bench/profiles/projects.yml
index 2d96fb732910..e012d36b0b01 100644
--- a/bench/profiles/projects.yml
+++ b/bench/profiles/projects.yml
@@ -18,7 +18,7 @@ charts:
           label: bootstrapped
 
     - name: re2
-      url: https://github.com/lampepfl/bench/blob/master/tests/re2s
+      url: https://github.com/lampepfl/bench/blob/main/tests/re2s
       lines:
         - key: re2s
           label: bootstrapped
diff --git a/bench/profiles/quotes.yml b/bench/profiles/quotes.yml
index 9cb0d44e2304..afd970543aa1 100644
--- a/bench/profiles/quotes.yml
+++ b/bench/profiles/quotes.yml
@@ -1,18 +1,18 @@
 charts:
     - name: "Inline a quote"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/power-macro/PowerInlined-1.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/power-macro/PowerInlined-1.scala
       lines:
         - key: power-macro-power-inlined-1
           label: bootstrapped
 
     - name: "Inline 1k quotes"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/power-macro/PowerInlined-1k.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/power-macro/PowerInlined-1k.scala
       lines:
         - key: power-macro-power-inlined-1k
           label: bootstrapped
 
     - name: "Quote String interpolation matching"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/string-interpolation-macro/Test.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/string-interpolation-macro/Test.scala
       lines:
         - key: quote-string-interpolation-matching
           label: bootstrapped
diff --git a/bench/profiles/tuples.yml b/bench/profiles/tuples.yml
index eaa2f302a885..5e41ecf7c80d 100644
--- a/bench/profiles/tuples.yml
+++ b/bench/profiles/tuples.yml
@@ -1,42 +1,42 @@
 charts:
     - name: "Tuple22 creation with Tuple22.apply"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/tuple22-creation-apply.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/tuple22-creation-apply.scala
       lines:
         - key: tuple22-creation-apply
           label: bootstrapped
 
     - name: "Tuple22 creation with *:"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/tuple22-creation-cons.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/tuple22-creation-cons.scala
       lines:
         - key: tuple22-creation-cons
           label: bootstrapped
 
     - name: "Tuple22.tail"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/tuple22-tails.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/tuple22-tails.scala
       lines:
         - key: tuple22-tails
           label: bootstrapped
 
     - name: "Tuple22.apply"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/tuple22-apply.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/tuple22-apply.scala
       lines:
         - key: tuple22-apply
           label: bootstrapped
 
     - name: "Tuple22.size"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/tuple22-size.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/tuple22-size.scala
       lines:
         - key: tuple22-size
           label: bootstrapped
 
     - name: "Tuple reverse (Runtime)"
-      url: https://github.com/lampepfl/dotty/blob/master/bench-run/src/main/scala/dotty/tools/benchmarks/tuples/TupleOps.scala#L59
+      url: https://github.com/lampepfl/dotty/blob/main/bench-run/src/main/scala/dotty/tools/benchmarks/tuples/TupleOps.scala#L59
       lines:
         - key: tuple-reverse
           label: bootstrapped
 
     - name: "Tuple flatMap (Runtime)"
-      url: https://github.com/lampepfl/dotty/blob/master/bench-run/src/main/scala/dotty/tools/benchmarks/tuples/TupleOps.scala#L64
+      url: https://github.com/lampepfl/dotty/blob/main/bench-run/src/main/scala/dotty/tools/benchmarks/tuples/TupleOps.scala#L64
       lines:
         - key: tuple-flatMap
           label: bootstrapped
diff --git a/bench/profiles/typing.yml b/bench/profiles/typing.yml
index 4df33da49d32..f6476bca7006 100644
--- a/bench/profiles/typing.yml
+++ b/bench/profiles/typing.yml
@@ -1,6 +1,6 @@
 charts:
     - name: "Find Ref"
-      url: https://github.com/lampepfl/dotty/blob/master/tests/bench/FindRef.scala
+      url: https://github.com/lampepfl/dotty/blob/main/tests/bench/FindRef.scala
       lines:
         - key: find-ref
           label: bootstrapped
diff --git a/docs/blog/_posts/2019-06-11-16th-dotty-milestone-release.md b/docs/blog/_posts/2019-06-11-16th-dotty-milestone-release.md
index e3d81f6c3df5..41194df26625 100644
--- a/docs/blog/_posts/2019-06-11-16th-dotty-milestone-release.md
+++ b/docs/blog/_posts/2019-06-11-16th-dotty-milestone-release.md
@@ -156,7 +156,7 @@ enum B(val gravity: Double) extends java.lang.Enum[B] {
 }
 ```
 
-For more information please check the [test case](https://github.com/lampepfl/dotty/tree/master/tests/run/enum-java) and
+For more information please check the [test case](https://github.com/lampepfl/dotty/tree/main/tests/run/enum-java) and
 also the relevant PRs [#6602](https://github.com/lampepfl/dotty/pull/6602) and
 [#6629](https://github.com/lampepfl/dotty/pull/6629).
 
diff --git a/docs/blog/_posts/2019-12-20-21th-dotty-milestone-release.md b/docs/blog/_posts/2019-12-20-21th-dotty-milestone-release.md
index 6b5d28c35254..94d8ee61bec9 100644
--- a/docs/blog/_posts/2019-12-20-21th-dotty-milestone-release.md
+++ b/docs/blog/_posts/2019-12-20-21th-dotty-milestone-release.md
@@ -48,7 +48,7 @@ It means that we can now put the Scala 3 compiler under heavy load, getting it
 ready for industrial strength applications. At the moment we have 23
 projects on our community projects and we expect this number to go up!
 
-> https://github.com/lampepfl/dotty/tree/master/community-build/community-projects
+> https://github.com/lampepfl/dotty/tree/main/community-build/community-projects
 
 This project contains tests to build and test a corpus of open sources Scala 2.x
 projects against Scala 3.
diff --git a/docs/blog/_posts/2020-04-29-24th-dotty-milestone-release.md b/docs/blog/_posts/2020-04-29-24th-dotty-milestone-release.md
index d4f34446e5c4..e32df8cacc55 100644
--- a/docs/blog/_posts/2020-04-29-24th-dotty-milestone-release.md
+++ b/docs/blog/_posts/2020-04-29-24th-dotty-milestone-release.md
@@ -134,7 +134,7 @@ We are looking forward to having you join the team of contributors.
 
 Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
 snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2020-06-22-25th-dotty-milestone-release.md b/docs/blog/_posts/2020-06-22-25th-dotty-milestone-release.md
index 8989a2f7b410..dd5def04bfe9 100644
--- a/docs/blog/_posts/2020-06-22-25th-dotty-milestone-release.md
+++ b/docs/blog/_posts/2020-06-22-25th-dotty-milestone-release.md
@@ -98,7 +98,7 @@ We are looking forward to having you join the team of contributors.
 
 Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
 snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2020-07-27-26th-dotty-milestone-release.md b/docs/blog/_posts/2020-07-27-26th-dotty-milestone-release.md
index 06a76455e433..b0d153dded7e 100644
--- a/docs/blog/_posts/2020-07-27-26th-dotty-milestone-release.md
+++ b/docs/blog/_posts/2020-07-27-26th-dotty-milestone-release.md
@@ -128,7 +128,7 @@ We are looking forward to having you join the team of contributors.
 
 Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
 snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2020-08-31-27th-dotty-milestone-release.md b/docs/blog/_posts/2020-08-31-27th-dotty-milestone-release.md
index 641db674abb6..e42e98a1385b 100644
--- a/docs/blog/_posts/2020-08-31-27th-dotty-milestone-release.md
+++ b/docs/blog/_posts/2020-08-31-27th-dotty-milestone-release.md
@@ -109,7 +109,7 @@ We are looking forward to having you join the team of contributors.
 
 Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
 snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2020-11-09-scala3-m1.md b/docs/blog/_posts/2020-11-09-scala3-m1.md
index 5292ad0e8344..ffef5618f9ff 100644
--- a/docs/blog/_posts/2020-11-09-scala3-m1.md
+++ b/docs/blog/_posts/2020-11-09-scala3-m1.md
@@ -199,7 +199,7 @@ We are looking forward to having you join the team of contributors.
 
 Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
 snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2020-12-18-scala3-m3.md b/docs/blog/_posts/2020-12-18-scala3-m3.md
index e0cba2b144d8..41cfa76c0265 100644
--- a/docs/blog/_posts/2020-12-18-scala3-m3.md
+++ b/docs/blog/_posts/2020-12-18-scala3-m3.md
@@ -231,7 +231,7 @@ We are looking forward to having you join the team of contributors.
 
 ## Library authors: Join our community build
 
-Scala 3 is regularly tested against a sample of libraries known as the "community build". You can add your library to the [community build](https://github.com/lampepfl/dotty/tree/master/community-build) by submitting a PR.
+Scala 3 is regularly tested against a sample of libraries known as the "community build". You can add your library to the [community build](https://github.com/lampepfl/dotty/tree/main/community-build) by submitting a PR.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
 
diff --git a/docs/blog/_posts/2021-03-31-scala3-rc2.md b/docs/blog/_posts/2021-03-31-scala3-rc2.md
index 8e4439037be5..178dfabfbffc 100644
--- a/docs/blog/_posts/2021-03-31-scala3-rc2.md
+++ b/docs/blog/_posts/2021-03-31-scala3-rc2.md
@@ -116,7 +116,7 @@ We are looking forward to having you join the team of contributors.
 
 Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
 snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2021-04-21-scala3-rc3.md b/docs/blog/_posts/2021-04-21-scala3-rc3.md
index 532bcb4060cb..8651730da93a 100644
--- a/docs/blog/_posts/2021-04-21-scala3-rc3.md
+++ b/docs/blog/_posts/2021-04-21-scala3-rc3.md
@@ -49,7 +49,7 @@ We are looking forward to having you join the team of contributors.
 
 Dotty now has a set of widely-used community libraries that are built against every nightly Dotty
 snapshot. Currently, this includes shapeless, ScalaPB, algebra, scalatest, scopt and squants.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2021-06-07-scala3.0.1-rc1-release.md b/docs/blog/_posts/2021-06-07-scala3.0.1-rc1-release.md
index d4b7ef88df41..e9fac2d0447c 100644
--- a/docs/blog/_posts/2021-06-07-scala3.0.1-rc1-release.md
+++ b/docs/blog/_posts/2021-06-07-scala3.0.1-rc1-release.md
@@ -147,7 +147,7 @@ According to `git shortlog -sn --no-merges 3.0.0-RC2..3.0.1-RC1`† these are:
 ## Library authors: Join our community build
 
 Scala 3 now has a set of widely-used community libraries that are built against every nightly Scala 3 snapshot.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/blog/_posts/2021-06-25-scala301-rc2.md b/docs/blog/_posts/2021-06-25-scala301-rc2.md
index 136b43928d45..76257d1a8664 100644
--- a/docs/blog/_posts/2021-06-25-scala301-rc2.md
+++ b/docs/blog/_posts/2021-06-25-scala301-rc2.md
@@ -29,7 +29,7 @@ According to `git shortlog -sn --no-merges 3.0.1-RC1..3.0.1-RC2` these are:
 ## Library authors: Join our community build
 
 Scala 3 now has a set of widely-used community libraries that are built against every nightly Scala 3 snapshot.
-Join our [community build](https://github.com/lampepfl/dotty/tree/master/community-build)
+Join our [community build](https://github.com/lampepfl/dotty/tree/main/community-build)
 to make sure that our regression suite includes your library.
 
 [Scastie]: https://scastie.scala-lang.org/?target=dotty
diff --git a/docs/docs/contributing/debugging.md b/docs/docs/contributing/debugging.md
index 84f6937f628f..959ad6706290 100644
--- a/docs/docs/contributing/debugging.md
+++ b/docs/docs/contributing/debugging.md
@@ -164,7 +164,7 @@ val YshowVarBounds    = BooleanSetting("-Yshow-var-bounds"   , "Print type varia
 val YtestPickler      = BooleanSetting("-Ytest-pickler"      , "self-test for pickling functionality; should be used with -Ystop-after:pickler")
 ```
 
-They are defined in [ScalaSettings.scala](https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/config/ScalaSettings.scala). E.g. `YprintPos` is defined as:
+They are defined in [ScalaSettings.scala](https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/config/ScalaSettings.scala). E.g. `YprintPos` is defined as:
 
 ```scala
 val YprintPos: Setting[Boolean] = BooleanSetting("-Yprint-pos", "show tree positions.")
diff --git a/docs/docs/contributing/getting-started.md b/docs/docs/contributing/getting-started.md
index 8b617c04f6c4..c842fd0a49d0 100644
--- a/docs/docs/contributing/getting-started.md
+++ b/docs/docs/contributing/getting-started.md
@@ -89,7 +89,7 @@ $ sbt
 For more information, see `scaladoc/README.md`.
 
 Before contributing to Dotty, we invite you to consult the
-[Dotty Developer Guidelines](https://github.com/lampepfl/dotty/blob/master/CONTRIBUTING.md).
+[Dotty Developer Guidelines](https://github.com/lampepfl/dotty/blob/main/CONTRIBUTING.md).
 
 
 Community
diff --git a/docs/docs/internals/overall-structure.md b/docs/docs/internals/overall-structure.md
index 73964977ba42..f50ab6bf03a7 100644
--- a/docs/docs/internals/overall-structure.md
+++ b/docs/docs/internals/overall-structure.md
@@ -233,10 +233,10 @@ Phases fall into four categories:
 * Code generators: These map the transformed trees to Java classfiles or
   .sjsir files.
 
-[dotty.tools]: https://github.com/lampepfl/dotty/tree/master/compiler/src/dotty/tools
-[dotc]: https://github.com/lampepfl/dotty/tree/master/compiler/src/dotty/tools/dotc
-[Main]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/Main.scala
-[Driver]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/Driver.scala
-[Compiler]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/Compiler.scala
-[Run]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/Run.scala
-[Context]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/core/Contexts.scala
+[dotty.tools]: https://github.com/lampepfl/dotty/tree/main/compiler/src/dotty/tools
+[dotc]: https://github.com/lampepfl/dotty/tree/main/compiler/src/dotty/tools/dotc
+[Main]: https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/Main.scala
+[Driver]: https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/Driver.scala
+[Compiler]: https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/Compiler.scala
+[Run]: https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/Run.scala
+[Context]: https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/core/Contexts.scala
diff --git a/docs/docs/internals/type-system.md b/docs/docs/internals/type-system.md
index 7c5f8bf827d9..8fa8912a7118 100644
--- a/docs/docs/internals/type-system.md
+++ b/docs/docs/internals/type-system.md
@@ -132,8 +132,8 @@ TODO
 ## Type inference via constraint solving ##
 TODO
 
-[1]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/core/Types.scala
+[1]: https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/core/Types.scala
 [2]: https://github.com/samuelgruetter/dotty/blob/classdiagrampdf/dotty-types.pdf
 [3]: https://github.com/samuelgruetter/scaladiagrams/tree/print-descendants
-[4]: https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/core/TypeComparer.scala
-[5]: https://github.com/lampepfl/dotty/blob/master/tests/pos/refinedSubtyping.scala
+[4]: https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/core/TypeComparer.scala
+[5]: https://github.com/lampepfl/dotty/blob/main/tests/pos/refinedSubtyping.scala
diff --git a/docs/docs/reference/changed-features/structural-types-spec.md b/docs/docs/reference/changed-features/structural-types-spec.md
index 5c99afbcc1bb..290189a67eda 100644
--- a/docs/docs/reference/changed-features/structural-types-spec.md
+++ b/docs/docs/reference/changed-features/structural-types-spec.md
@@ -16,7 +16,7 @@ RefineStat    ::= ‘val’ VarDcl | ‘def’ DefDcl | ‘type’ {nl} TypeDcl
 ## Implementation of Structural Types
 
 The standard library defines a universal marker trait
-[`scala.Selectable`](https://github.com/lampepfl/dotty/blob/master/library/src/scala/Selectable.scala):
+[`scala.Selectable`](https://github.com/lampepfl/dotty/blob/main/library/src/scala/Selectable.scala):
 
 ```scala
 trait Selectable extends Any
diff --git a/docs/docs/reference/contextual/multiversal-equality.md b/docs/docs/reference/contextual/multiversal-equality.md
index 1af1786374bc..f01b64d2e444 100644
--- a/docs/docs/reference/contextual/multiversal-equality.md
+++ b/docs/docs/reference/contextual/multiversal-equality.md
@@ -25,7 +25,7 @@ the program will still typecheck, since values of all types can be compared with
 But it will probably give unexpected results and fail at runtime.
 
 Multiversal equality is an opt-in way to make universal equality safer.
-It uses a binary type class [`scala.CanEqual`](https://github.com/lampepfl/dotty/blob/master/library/src/scala/CanEqual.scala)
+It uses a binary type class [`scala.CanEqual`](https://github.com/lampepfl/dotty/blob/main/library/src/scala/CanEqual.scala)
 to indicate that values of two given types can be compared with each other.
 The example above would not typecheck if `S` or `T` was a class
 that derives `CanEqual`, e.g.
@@ -70,7 +70,7 @@ given CanEqual[A, B] = CanEqual.derived
 given CanEqual[B, A] = CanEqual.derived
 ```
 
-The [`scala.CanEqual`](https://github.com/lampepfl/dotty/blob/master/library/src/scala/CanEqual.scala)
+The [`scala.CanEqual`](https://github.com/lampepfl/dotty/blob/main/library/src/scala/CanEqual.scala)
 object defines a number of `CanEqual` given instances that together
 define a rule book for what standard types can be compared (more details below).
 
diff --git a/docs/docs/reference/enums/enums.md b/docs/docs/reference/enums/enums.md
index e68f54fa0dd1..fda03d2dee81 100644
--- a/docs/docs/reference/enums/enums.md
+++ b/docs/docs/reference/enums/enums.md
@@ -152,7 +152,7 @@ scala> Color.Red.compareTo(Color.Green)
 val res15: Int = -1
 ```
 
-For a more in-depth example of using Scala 3 enums from Java, see [this test](https://github.com/lampepfl/dotty/tree/master/tests/run/enum-java). In the test, the enums are defined in the `MainScala.scala` file and used from a Java source, `Test.java`.
+For a more in-depth example of using Scala 3 enums from Java, see [this test](https://github.com/lampepfl/dotty/tree/main/tests/run/enum-java). In the test, the enums are defined in the `MainScala.scala` file and used from a Java source, `Test.java`.
 
 ### Implementation
 
diff --git a/docs/docs/reference/experimental/explicit-nulls.md b/docs/docs/reference/experimental/explicit-nulls.md
index 1ee404a44cec..ebdb3356d99e 100644
--- a/docs/docs/reference/experimental/explicit-nulls.md
+++ b/docs/docs/reference/experimental/explicit-nulls.md
@@ -426,7 +426,7 @@ When dealing with local mutable variables, there are two questions:
      x = null
    ```
 
-See [more examples](https://github.com/lampepfl/dotty/blob/master/tests/explicit-nulls/neg/flow-varref-in-closure.scala).
+See [more examples](https://github.com/lampepfl/dotty/blob/main/tests/explicit-nulls/neg/flow-varref-in-closure.scala).
 
 Currently, we are unable to track paths with a mutable variable prefix.
 For example, `x.a` if `x` is mutable.
diff --git a/docs/docs/reference/new-types/dependent-function-types-spec.md b/docs/docs/reference/new-types/dependent-function-types-spec.md
index aeca72fbe302..c3915ba9b8ac 100644
--- a/docs/docs/reference/new-types/dependent-function-types-spec.md
+++ b/docs/docs/reference/new-types/dependent-function-types-spec.md
@@ -46,7 +46,7 @@ same way that other functions do, see
 The example below defines a trait `C` and the two dependent function types
 `DF` and `IDF` and prints the results of the respective function applications:
 
-[depfuntype.scala]: https://github.com/lampepfl/dotty/blob/master/tests/pos/depfuntype.scala
+[depfuntype.scala]: https://github.com/lampepfl/dotty/blob/main/tests/pos/depfuntype.scala
 
 ```scala
 trait C { type M; val m: M }
@@ -70,7 +70,7 @@ type IDF = (x: C) ?=> x.M
 
 In the following example the depend type `f.Eff` refers to the effect type `CanThrow`:
 
-[eff-dependent.scala]: https://github.com/lampepfl/dotty/blob/master/tests/run/eff-dependent.scala
+[eff-dependent.scala]: https://github.com/lampepfl/dotty/blob/main/tests/run/eff-dependent.scala
 
 ```scala
 trait Effect
diff --git a/docs/docs/reference/new-types/intersection-types-spec.md b/docs/docs/reference/new-types/intersection-types-spec.md
index 4d236c37dcc3..8ed9305e1486 100644
--- a/docs/docs/reference/new-types/intersection-types-spec.md
+++ b/docs/docs/reference/new-types/intersection-types-spec.md
@@ -98,7 +98,7 @@ glb(A, _)                 = A                     // use first
 In the above, `|T|` means the erased type of `T`, `JArray` refers to
 the type of Java Array.
 
-See also: [`TypeErasure#erasedGlb`](https://github.com/lampepfl/dotty/blob/master/compiler/src/dotty/tools/dotc/core/TypeErasure.scala#L289).
+See also: [`TypeErasure#erasedGlb`](https://github.com/lampepfl/dotty/blob/main/compiler/src/dotty/tools/dotc/core/TypeErasure.scala#L289).
 
 ## Relationship with Compound Type (`with`)
 
diff --git a/project/Build.scala b/project/Build.scala
index 000dfb8e2b6e..e91849fdd1d3 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -1394,10 +1394,10 @@ object Build {
 
         def generateDocTask =
           generateDocumentation(
-            roots, "Scala 3", dest.getAbsolutePath, "master",
+            roots, "Scala 3", dest.getAbsolutePath, "main",
             Seq(
               "-comment-syntax", "wiki",
-              s"-source-links:docs=github://lampepfl/dotty/master#docs",
+              s"-source-links:docs=github://lampepfl/dotty/main#docs",
               "-doc-root-content", docRootFile.toString,
               "-versions-dictionary-url",
               "https://scala-lang.org/api/versions.json",
@@ -1420,7 +1420,7 @@ object Build {
           (Test / Build.testcasesOutputDir).value,
           "scaladoc testcases",
           "scaladoc/output/testcases",
-          "master",
+          "main",
           Seq("-usejavacp", "-snippet-compiler:scaladoc-testcases/docs=compile", "-siteroot", "scaladoc-testcases/docs")
         )
       }.value,
diff --git a/project/scripts/cmdScaladocTests b/project/scripts/cmdScaladocTests
index e2eb8fd65470..ce8d310fb248 100755
--- a/project/scripts/cmdScaladocTests
+++ b/project/scripts/cmdScaladocTests
@@ -38,6 +38,6 @@ dist/target/pack/bin/scaladoc \
   -siteroot scaladoc-testcases/docs \
   -project-footer "Copyright (c) 2002-2022, LAMP/EPFL" \
   -default-template static-site-main \
-  -author -groups -revision master -project-version "${DOTTY_BOOTSTRAPPED_VERSION}" \
+  -author -groups -revision main -project-version "${DOTTY_BOOTSTRAPPED_VERSION}" \
   out/bootstrap/scaladoc-testcases/scala-"${DOTTY_NONBOOTSTRAPPED_VERSION}"/classes > "$tmp" 2>&1 || echo "generated testcases project with scripts"
 diff -rq "$OUT1" "scaladoc/output/testcases"