diff --git a/.ci/install.sh b/.ci/install.sh
index 6d6894566..c588af42f 100755
--- a/.ci/install.sh
+++ b/.ci/install.sh
@@ -27,6 +27,7 @@ fi
 
 python3 -m pip install --upgrade pip
 python3 -m pip install --upgrade wheel
+PYTHONOPTIMIZE=0 python3 -m pip install cffi
 python3 -m pip install coverage
 python3 -m pip install defusedxml
 python3 -m pip install olefile
@@ -37,7 +38,6 @@ python3 -m pip install pyroma
 python3 -m pip install test-image-results
 
 if [[ $(uname) != CYGWIN* ]]; then
-    PYTHONOPTIMIZE=0 python3 -m pip install cffi
     # TODO Remove condition when NumPy supports 3.11
     if ! [ "$GHA_PYTHON_VERSION" == "3.11-dev" ]; then python3 -m pip install numpy ; fi