diff --git a/build-constraints.yaml b/build-constraints.yaml
index 463a56bc..c778f74d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1467,6 +1467,9 @@ packages:
         - pcre-utils
         - strict-base-types
 
+    "Mark Karpov <markkarpov@opmbx.org> @mrkkrp":
+        - megaparsec
+
     "Stackage upper bounds":
         # https://github.com/fpco/stackage/issues/537
         - zlib < 0.6