diff --git a/build-constraints.yaml b/build-constraints.yaml
index 4dc4209d..7acef7b1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -351,7 +351,7 @@ packages:
         - git-vogue < 0 # 0.3.0.2 compile fail
 
     "Manuel Bärenz <programming@manuelbaerenz.de> @turion":
-        - dunai
+        - dunai < 0 # 9.6 https://github.com/ivanperez-keera/dunai/issues/371
         - essence-of-live-coding < 0 # 0.2.7 compile fail https://github.com/turion/essence-of-live-coding/issues/107
         - essence-of-live-coding-gloss
         - essence-of-live-coding-pulse