diff --git a/build-constraints.yaml b/build-constraints.yaml
index a073172b..8e0ba188 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2930,6 +2930,8 @@ expected-test-failures:
 
     - hackernews # https://github.com/dmjio/hackernews/issues/19
 
+    - heist # https://github.com/snapframework/heist/issues/95
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run