diff --git a/build-constraints.yaml b/build-constraints.yaml
index 496b6c43..7c9a44e0 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4444,7 +4444,7 @@ packages:
         - headroom
 
     "Adrian Sieber <stackage@ad-si.com> @ad-si":
-        - ulid
+        - ulid < 0 # random 1.2
 
     "Rickey Visinski <rickeyvisinski+hs@gmail.com> @rickeyski":
         - slack-api