diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0d5e7092..065a6e40 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2553,6 +2553,9 @@ packages:
         # https://github.com/fpco/stackage/issues/1863
         - newtype-generics < 0.4
         - MemoTrie < 0.6.5
+
+        # https://github.com/clckwrks/clckwrks/issues/4
+        - clckwrks < 0.23.19
 # end of packages