diff --git a/CI/before_install.osx.sh b/CI/before_install.osx.sh
index d8832d90e..9d0774d3c 100755
--- a/CI/before_install.osx.sh
+++ b/CI/before_install.osx.sh
@@ -3,6 +3,7 @@
 # workaround python issue on travis
 HOMEBREW_NO_AUTO_UPDATE=1 brew uninstall --ignore-dependencies python@3.8 || true
 HOMEBREW_NO_AUTO_UPDATE=1 brew uninstall --ignore-dependencies python@3.9 || true
+HOMEBREW_NO_AUTO_UPDATE=1 brew uninstall --ignore-dependencies qt@6 || true
 
 # Some of these tools can come from places other than brew, so check before installing
 command -v ccache >/dev/null 2>&1 || brew install ccache