diff --git a/build-constraints.yaml b/build-constraints.yaml
index c03fe4d6..4d5713f2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7823,6 +7823,10 @@ packages:
         - crypton-x509-system < 0
         - crypton-x509-validation < 0
         - warp < 3.3.26
+
+        # https://github.com/commercialhaskell/stackage/issues/7003
+        - megaparsec < 9.4
+        - megaparsec-tests < 9.4
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of