diff --git a/build-constraints.yaml b/build-constraints.yaml
index 769c43fb..0fd374d0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3154,6 +3154,9 @@ packages:
         # https://github.com/fpco/stackage/issues/2489
         - haskell-src-meta < 0.8
 
+        # https://github.com/fpco/stackage/issues/2494
+        - websockets-simple < 0.0.2.1
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of