diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3edc59e0..099d51a9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3534,7 +3534,6 @@ packages:
         - stm-containers < 0 # GHC 8.4 via list-t
         - timemap < 0 # GHC 8.4 via list-t
         - groundhog-mysql < 0 # GHC 8.4 via mysql
-        - persistent-mysql < 0 # GHC 8.4 via mysql
         - pred-trie < 0 # GHC 8.4 via pred-set
         - rainbox < 0 # GHC 8.4 via rainbow
         - reform-blaze < 0 # GHC 8.4 via reform