diff --git a/build-constraints.yaml b/build-constraints.yaml
index 312df550..d5dd8d3c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8182,6 +8182,9 @@ packages:
 
         # https://github.com/commercialhaskell/stackage/issues/7177
         - typst-symbols < 0.1.5
+
+        # https://github.com/commercialhaskell/stackage/issues/7178
+        - cassava-megaparsec < 2.1
     # end of Stackage upper bounds
 # end of packages