diff --git a/build-constraints.yaml b/build-constraints.yaml
index d361dfdb..242de745 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3187,6 +3187,9 @@ packages:
         - hspec-core < 2.4.5
         - hspec-discover < 2.4.5
 
+        # https://github.com/fpco/stackage/issues/3172
+        - safe < 0.3.16
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of