diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3739afa3..f3823a43 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5706,9 +5706,6 @@ packages:
         - chronos < 0 # tried chronos-1.1.3, but its *library* requires the disabled package: bytesmith
         - chronos-bench < 0 # tried chronos-bench-0.2.0.2, but its *library* requires the disabled package: chronos
         - clang-compilation-database < 0 # tried clang-compilation-database-0.1.0.1, but its *library* does not support: base-4.15.1.0
-        - clash-ghc < 0 # tried clash-ghc-1.4.6, but its *library* does not support: ghc-bignum-1.1
-        - clash-lib < 0 # tried clash-lib-1.4.6, but its *library* does not support: ghc-bignum-1.1
-        - clash-prelude < 0 # tried clash-prelude-1.4.6, but its *library* does not support: ghc-bignum-1.1
         - classyplate < 0 # tried classyplate-0.3.2.0, but its *library* does not support: base-4.15.1.0
         - classyplate < 0 # tried classyplate-0.3.2.0, but its *library* does not support: template-haskell-2.17.0.0
         - clock-extras < 0 # tried clock-extras-0.1.0.2, but its *library* does not support: clock-0.8.2