diff --git a/build-constraints.yaml b/build-constraints.yaml
index 28edcbdf..e0fab9bc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -187,6 +187,7 @@ packages:
         - stylish-haskell
         - psqueues
         - websockets
+        - websockets-snap
 
     "haskell-opengl":
         - OpenGL