diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 88bcd73..e8b2da2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,7 +20,7 @@ jobs:
         mv libmpv-2.dll mpv-2.dll
         pip install wheel
         pip install git+https://github.com/pythonnet/pythonnet@438bcdd3f0b2e2ee358b407cfc96e4385e5783fc
-        pip install .[all] pywebview==3.4 pyinstaller-hooks-contrib==2022.13 pywin32==305 pywin32-ctypes==0.2.0
+        pip install .[all] pywebview==3.4 pywin32==304
         ./gen_pkg.sh --skip-build
         python ./get_pywebview_natives.py
       shell: bash
@@ -56,7 +56,7 @@ jobs:
         mv libmpv-2.dll mpv-2.dll
         pip install wheel
         pip install git+https://github.com/pythonnet/pythonnet@438bcdd3f0b2e2ee358b407cfc96e4385e5783fc
-        pip install .[all] pywebview==3.4 pyinstaller-hooks-contrib==2022.13 pywin32==305 pywin32-ctypes==0.2.0
+        pip install .[all] pywebview==3.4 pywin32==304
         ./gen_pkg.sh --skip-build
         python ./get_pywebview_natives.py
       shell: bash
diff --git a/gen_pkg.sh b/gen_pkg.sh
index c571f30..9fc2cb5 100755
--- a/gen_pkg.sh
+++ b/gen_pkg.sh
@@ -46,7 +46,7 @@ if [[ "$1" == "--get-pyinstaller" ]]
 then
     echo "Downloading pyinstaller..."
     #pi_version=$(get_resource_version pyinstaller/pyinstaller)
-    pi_version=v5.6.2
+    pi_version=v5.1
     download_compat release.zip "https://github.com/pyinstaller/pyinstaller/archive/$pi_version.zip" "pi"
     (
         mkdir pyinstaller