diff --git a/build-constraints.yaml b/build-constraints.yaml
index 72e0f362..8888e3e9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2688,7 +2688,7 @@ packages:
     "Tony Day <tonyday567@gmail.com> @tonyday567":
         - numhask
         - numhask-range
-        # - perf # https://github.com/tonyday567/perf/issues/2
+        - perf
         - online
         - chart-unit