diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2120379a..7103c26b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -399,7 +399,8 @@ packages:
         - serversession-backend-persistent
         - serversession-backend-redis
         - serversession-frontend-snap
-        - serversession-frontend-wai
+        # <https://github.com/singpolyma/wai-session/pull/7>
+        # - serversession-frontend-wai
         - serversession-frontend-yesod
         - thumbnail-plus
         - yesod-fb