diff --git a/.ci/install.sh b/.ci/install.sh
index 6aa122cc5..81631a9bd 100755
--- a/.ci/install.sh
+++ b/.ci/install.sh
@@ -43,7 +43,7 @@ if [[ $(uname) != CYGWIN* ]]; then
     # PyQt6 doesn't support PyPy3
     if [[ $GHA_PYTHON_VERSION == 3.* ]]; then
         sudo apt-get -qq install libegl1 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0 libxkbcommon-x11-0
-        python3 -m pip install pyqt6
+        python3 -m pip install pyqt6 PyQt6-Qt6!=6.5.0
     fi
 
     # webp