diff --git a/build-constraints.yaml b/build-constraints.yaml
index a52b0069..094f8802 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2562,6 +2562,9 @@ packages:
         - servant-docs < 0.9
         - servant-js < 0.9
         - language-puppet < 1.3.2
+
+        # https://github.com/fpco/stackage/issues/1929
+        - hspec-megaparsec < 0.3.0
 # end of packages