diff --git a/build-constraints.yaml b/build-constraints.yaml
index fcd76ae4..f1a36781 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2453,9 +2453,6 @@ expected-test-failures:
     # openfile: does not exist
     - skein
 
-    # https://github.com/ekmett/lens/issues/634
-    - lens
-
 # end of expected-test-failures