diff --git a/build-constraints.yaml b/build-constraints.yaml
index d3190e39..78963474 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3351,6 +3351,9 @@ packages:
         # https://github.com/tsani/servant-github-webhook/issues/9
         - servant-github-webhook < 0.4
 
+        # https://github.com/haskell/parsec/issues/88
+        - parsec < 3.1.12
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of