diff --git a/build-constraints.yaml b/build-constraints.yaml
index e88a623f..38731472 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -440,7 +440,7 @@ packages:
         # fails see #885
         #- hatex-guide
         - include-file
-        # GHC 8 - matrix
+        - matrix
         - pcre-light
         - phantom-state
         - post-mess-age