diff --git a/build-constraints.yaml b/build-constraints.yaml
index e6b8dfa0..087c020f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -844,6 +844,10 @@ expected-test-failures:
     # https://github.com/elm-lang/elm-package/issues/81
     - elm-package
 
+    # Fails sporadically
+    - crypto-numbers
+    - distributed-process-task
+
 # Haddocks which are expected to fail. Same concept as expected test failures.
 expected-haddock-failures:
     # https://github.com/acw/bytestring-progress/issues/4