diff --git a/build-constraints.yaml b/build-constraints.yaml
index aaa4514c..ee80c7ba 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1431,6 +1431,7 @@ packages:
         - AC-Angle
         - language-protobuf
         - generic-aeson
+        - stm-hamt
         - stm-containers # 0 # https://github.com/commercialhaskell/stackage/pull/5289#issuecomment-610353366
 
     "Flavio Corpa <flaviocorpa@gmail.com> @kutyel":