diff --git a/build-constraints.yaml b/build-constraints.yaml
index 89f4b2e6..e3c31dde 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4383,8 +4383,8 @@ packages:
         # Cabal < 2.3
 
         # https://github.com/commercialhaskell/stackage/issues/3955
-        # megaparsec < 7.0.0
-        # hspec-megaparsec < 2.0.0
+        - megaparsec < 7.0.0
+        - hspec-megaparsec < 2.0.0
         # modern-uri < 0.3.0.0
         # tibetan-utils < 0.1.1.9
         # language-puppet < 1.4.0