diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0186964d..10d684ab 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5145,6 +5145,8 @@ packages:
         # Packages that I personally like to be on Stackage - but I do not maintain them!
         # Feel free to snatch them from me! Just remove them if they are casusing trouble!
         - easyplot
+        - delta-types
+        - probability-polynomial
         - refined-containers
         - smith