diff --git a/README.md b/README.md
index e17ab0e..eab1682 100644
--- a/README.md
+++ b/README.md
@@ -27,15 +27,15 @@ You will need to make the following adjustments to your build:
 
 ### project/plugins.sbt
 ```scala
-addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.4.6")
+addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.5.0")
 ```
 
 ### project/build.properties
 ```scala
-sbt.version=1.3.13
+sbt.version=1.4.5
 ```
 
-Older versions of sbt are not supported.  Newer versions (e.g. in the 1.4.x series) also work.
+You must use sbt 1.4 or newer; older versions of sbt are not supported.
 
 
 ### build.sbt
diff --git a/project/build.properties b/project/build.properties
index 7de0a93..c06db1b 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.4.4
+sbt.version=1.4.5