diff --git a/build-constraints.yaml b/build-constraints.yaml
index b6ccf671..c79b0bcd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1603,7 +1603,7 @@ packages:
     "Christiaan Baaij <christiaan.baaij@gmail.com> @christiaanb":
         - ghc-tcplugins-extra
         - ghc-typelits-extra
-        - ghc-typelits-knownnat
+        - ghc-typelits-knownnat         <0.3
         - ghc-typelits-natnormalise
         - clash-prelude
         - clash-lib