diff --git a/build-constraints.yaml b/build-constraints.yaml
index 74689764..a4177c7f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3286,9 +3286,6 @@ expected-test-failures:
     - snap-core # https://github.com/snapframework/snap-core/issues/26
     - stm-delay # https://github.com/joeyadams/haskell-stm-delay/issues/5
 
-    # https://github.com/JustusAdam/marvin/issues/12
-    - marvin
-
 
 # end of expected-test-failures