diff --git a/build-constraints.yaml b/build-constraints.yaml
index 59bc8ff0..9550a05e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -905,7 +905,8 @@ packages:
         - cabal-sort
         - ghcjs-codemirror
         - ghcjs-dom
-        - jsaddle
+        # https://github.com/ghcjs/jsaddle/issues/9
+        #- jsaddle
         - leksah-server
         - ltk
         - vado