diff --git a/build-constraints.yaml b/build-constraints.yaml
index 305638dd..a754452f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -916,8 +916,7 @@ packages:
         - cabal-sort
         - ghcjs-codemirror
         - ghcjs-dom
-        # https://github.com/haskell-gi/haskell-gi/issues/29
-        #- gi-gtk
+        - gi-gtk
         - gtksourceview3
         - idris
         - jsaddle