diff --git a/.github/workflows/build_windows.yml b/.github/workflows/build_windows.yml
index 73fe734..7bf78e9 100644
--- a/.github/workflows/build_windows.yml
+++ b/.github/workflows/build_windows.yml
@@ -24,6 +24,7 @@ jobs:
         python -m venv .env
         source .env/Scripts/activate
         python -m pip install --upgrade pip
+        pip install pyinstaller
         pip install -r requirements.txt  # Replace with your requirements file if exists
         
         pyinstaller --paths .env/Lib/site-packages \