diff --git a/build-constraints.yaml b/build-constraints.yaml
index 97d035d7..0aee3e87 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3065,6 +3065,9 @@ expected-test-failures:
 
     # https://github.com/haskoin/haskoin/issues/285
     - haskoin-core
+
+    # https://github.com/snapframework/snap-core/issues/261
+    - snap-core
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run