diff --git a/build-constraints.yaml b/build-constraints.yaml
index bcb11895..9ce99927 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -10,6 +10,10 @@ cabal-format-version: "2.4"
 # Constraints for brand new builds
 packages:
 
+    "Stephan Schiffels <stephan_schiffels@mac.com> @stschiff":
+        - sequence-formats
+        - pipes-ordered-zip
+    
     "YongJoon Joe <developer@quietjoon.net> @QuietJoon":
         - doldol
         - ENIG