diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3d2e190b..79a4d358 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2446,9 +2446,6 @@ expected-test-failures:
     # https://github.com/fpco/stackage/issues/1209
     - hsdev
 
-    # https://github.com/massysett/rainbox/issues/2
-    - rainbox
-
 # end of expected-test-failures