diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7d75753a..322d47bc 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3305,7 +3305,7 @@ packages:
         - gi-gmodule
         - gi-pango
         - gi-xlib
-        - gi-harfbuzz
+        - gi-harfbuzz < 0.0.6 # https://github.com/commercialhaskell/stackage/issues/6644
         - gi-gsk
         - gi-gtksource
         - gi-javascriptcore