diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8e10d53c..5683252f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1124,9 +1124,6 @@ packages:
         # https://github.com/fpco/stackage/issues/639
         - mainland-pretty < 0.3
 
-        # https://github.com/rodrigosetti/messagepack-rpc/issues/2
-        - messagepack < 0.4
-
         # https://github.com/fpco/stackage/issues/646
         - clock < 0.5