diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8871dbdb..bd7e5938 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1667,6 +1667,9 @@ packages:
         - messagepack < 0.5.0
         - messagepack-rpc < 0.5.1
 
+        # https://github.com/fpco/stackage/issues/957
+        - exact-pi < 0.3
+
 
 # end of packages