diff --git a/build-constraints.yaml b/build-constraints.yaml
index 11f74e49..d879c876 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1680,11 +1680,10 @@ packages:
         - tasty-hspec
 
     "Christiaan Baaij <christiaan.baaij@gmail.com> @christiaanb":
-        []
-        # - ghc-tcplugins-extra # GHC 8.2.1
-        # - ghc-typelits-extra # GHC 8.2.1
-        # - ghc-typelits-knownnat # GHC 8.2.1
-        # - ghc-typelits-natnormalise # GHC 8.2.1
+        - ghc-tcplugins-extra
+        - ghc-typelits-extra
+        - ghc-typelits-knownnat
+        - ghc-typelits-natnormalise
         # - clash-prelude # GHC 8.2.1
         # - clash-lib # GHC 8.2.1
         # - clash-vhdl # GHC 8.2.1