diff --git a/.gitmodules b/.gitmodules
index 9954895f286b..84dd7bd8061c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -44,3 +44,6 @@
 	path = community-build/community-projects/shapeless
 	url = https://github.com/milessabin/shapeless
 	branch = shapeless-3
+[submodule "community-build/community-projects/xml-interpolator"]
+	path = community-build/community-projects/xml-interpolator
+	url = https://github.com/lampepfl/xml-interpolator.git
diff --git a/community-build/community-projects/xml-interpolator b/community-build/community-projects/xml-interpolator
new file mode 160000
index 000000000000..7232e3df7bf4
--- /dev/null
+++ b/community-build/community-projects/xml-interpolator
@@ -0,0 +1 @@
+Subproject commit 7232e3df7bf428c7c7cd202b47af94f623f21c19
diff --git a/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala b/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala
index 8922466503a8..96be762abae9 100644
--- a/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala
+++ b/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala
@@ -177,6 +177,12 @@ class CommunityBuildTest {
     updateCommand = "update"
   )
 
+  @Test def xmlInterpolator = test(
+    project       = "xml-interpolator",
+    testCommand   = "test",
+    updateCommand = "update"
+  )
+
   // TODO @oderky? It got broken by #5458
   // @Test def pdbp = test(
   //   project       = "pdbp",