diff --git a/build-constraints.yaml b/build-constraints.yaml
index 63f4cd24..48cf5cb9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -593,7 +593,7 @@ packages:
         - psqueues
         - websockets
         - websockets-snap
-        - hakyll # jaspervdj/hakyll#691
+        - hakyll < 0 # jaspervdj/hakyll#691
 
     "Sibi Prabakaran <sibi@psibi.in> @psibi":
         - download