diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index f5eed51d..54631669 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -210,7 +210,8 @@ jobs:
     runs-on: macos-latest
 
     env:
-      QT_VERSION: 6.5.1
+      # Keep compat with MacOS 10.15 aka Catalina by Qt 6.4
+      QT_VERSION: 6.4.3
       QIF_VERSION: 4.6
 
     steps: