diff --git a/build-constraints.yaml b/build-constraints.yaml
index d76574d5..0da21e0e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3644,6 +3644,7 @@ expected-test-failures:
     - wai-cors # PhantomJS
     - wai-session-postgresql # PostgreSQL
     - webdriver-angular # webdriver server
+    - websockets
     - accelerate-bignum # CUDA GPU
     - gdax # Needs environment variables set
     - nakadi-client # Needs environment variable set