diff --git a/build-constraints.yaml b/build-constraints.yaml
index deeffda7..80ca006e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3372,7 +3372,7 @@ packages:
         - gi-pango
         - gi-xlib
         - gi-harfbuzz
-        - gi-gtksource
+        - gi-gtksource == 4.0.* # https://github.com/commercialhaskell/stackage/issues/7013
         - gi-javascriptcore < 6.0.3 # https://github.com/commercialhaskell/stackage/issues/6929
         - gi-vte
         - gi-webkit2