diff --git a/build-constraints.yaml b/build-constraints.yaml
index e3ee8c09..ef9b0fd4 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -735,6 +735,9 @@ packages:
     "Sönke Hahn soenkehahn@gmail.com @soenkehahn":
         - string-conversions
 
+    "Oleg Grenrus oleg.grenrus@iki.fi @phadej":
+        - waitra
+
     "Stackage upper bounds":
 
         # Force a specific version that's compatible with transformers 0.3