diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1b07cb69..4af78c7e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5387,7 +5387,7 @@ packages:
         - chell-hunit
         - chell-quickcheck
         - chunked-data
-        - cipher-blowfish < 0 # 0.0.3 compile fail
+        - cipher-blowfish # 0 # 0.0.3 compile fail
         - cipher-camellia
         - cipher-des
         - classy-prelude