diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6e7d1596..ed662f8e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3857,9 +3857,9 @@ packages:
         - genvalidity-text < 0 # GHC 8.4 via genvalidity-hspec
         - genvalidity-time < 0 # GHC 8.4 via genvalidity-hspec
         - genvalidity-uuid < 0 # GHC 8.4 via genvalidity-hspec
-        # follow-file < 0 # GHC 8.4 via hinotify
+        - follow-file < 0 # GHC 8.4 via hinotify
         - fsnotify < 0 # GHC 8.4 via hinotify
-        # ztail < 0 # GHC 8.4 via hinotify
+        - ztail < 0 # GHC 8.4 via hinotify
         - buchhaltung < 0 # GHC 8.4 via hint
         - haskintex < 0 # GHC 8.4 via hint
         - xmonad-extras < 0 # GHC 8.4 via hint