diff --git a/build-constraints.yaml b/build-constraints.yaml
index cc23f8f9..db73d00f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -8434,8 +8434,8 @@ packages:
 
     "Stackage upper bounds":
         # https://github.com/commercialhaskell/stackage/issues/7287
-        # warp < 3.4
-        # http2 < 5.1.0
+        - warp < 3.4
+        - http2 < 5.1.0
 
         # https://github.com/commercialhaskell/stackage/issues/7306
         - ansi-terminal < 1.1