diff --git a/build-constraints.yaml b/build-constraints.yaml
index f12e1de8..b92f40f2 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1470,6 +1470,9 @@ expected-test-failures:
     # https://github.com/MichaelXavier/Angel/issues/43
     - angel
 
+    # https://github.com/MichaelXavier/phash/issues/4
+    - phash
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4