diff --git a/build-constraints.yaml b/build-constraints.yaml
index 86ae7362..3fc428f2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2924,6 +2924,8 @@ expected-test-failures:
     - stack # Permissions failure when creating /home/stackage/.stack.
     - skein # openfile: does not exist https://github.com/fpco/stackage/issues/1187
 
+    - snap-core # https://github.com/snapframework/snap-core/issues/26
+
 # end of expected-test-failures
 
 # Benchmarks which are known not to build. Note that, currently we do not run