diff --git a/build-constraints.yaml b/build-constraints.yaml
index 19546cf8..3a11d13b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -771,7 +771,7 @@ packages:
         - lens-family-th
         - numbers
         - rev-state
-        - runmemo < 0 # build failure with GHC 8.4
+        - runmemo
         - tardis
         - yesod-gitrev