diff --git a/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala b/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala
index b96d7d9a35de..1aca2de74b65 100644
--- a/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala
+++ b/community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala
@@ -380,7 +380,7 @@ class CommunityBuildTest:
   @Test def utest = projects.utest.run()
   @Test def sourcecode = projects.sourcecode.run()
   @Test def oslib = projects.oslib.run()
-  //@Test def ujson = projects.ujson.run()
+  @Test def ujson = projects.ujson.run()
   // @Test def oslibWatch = projects.oslibWatch.run()
   @Test def stdLib213 = projects.stdLib213.run()
   @Test def shapeless = projects.shapeless.run()