diff --git a/build-constraints.yaml b/build-constraints.yaml
index e09b536b..959a0b15 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1270,6 +1270,9 @@ expected-test-failures:
     - hedis
     - redis-io
 
+    # https://github.com/twittner/swagger/issues/3
+    - swagger
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4