diff --git a/build-constraints.yaml b/build-constraints.yaml
index f0098b1e..7b3b77db 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1404,9 +1404,6 @@ packages:
         # https://github.com/fpco/stackage/issues/768
         - HUnit < 1.3
 
-        # https://github.com/fpco/stackage/issues/797
-        - pcre-heavy < 1
-
         # https://github.com/fpco/stackage/issues/798
         - hpc-coveralls < 1