diff --git a/build-constraints.yaml b/build-constraints.yaml
index 4ce72064..3660239b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1015,10 +1015,6 @@ package-flags:
     tar:
         old-time: false
 
-    mtl-compat:
-        two-point-one: false
-        two-point-two: false
-
     # https://github.com/fpco/stackage/pull/482#issuecomment-83635207
     jose-jwt:
         doctest: false