diff --git a/build-constraints.yaml b/build-constraints.yaml
index f4f74dd8..dc78fdcc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1,9 +1,11 @@
 ghc-major-version: "8.0"
 # Constraints for brand new builds
 packages:
-    "Nobutada Matsubara <t12307043@gunma-u.ac.jp> @matsubara0507":
-        - chatwork
-    
+    "Nobutada Matsubara <t12307043@gunma-u.ac.jp> @matsubara0507": []
+        # package temprarily removed as added while blocked on req-0.3.0;
+        # see https://github.com/fpco/stackage/issues/2641
+        # - chatwork
+
     "Pavol Klacansky <pavol@klacansky.com> @pavolzetor":
         - openexr-write