diff --git a/.gitlab/ci/build.gitlab-ci.yml b/.gitlab/ci/build.gitlab-ci.yml
index b6c553c388895985cc118a96040f2227dcb8c8f8..0f33f5c8cfd44ff917b522ce809171b165c969be 100644
--- a/.gitlab/ci/build.gitlab-ci.yml
+++ b/.gitlab/ci/build.gitlab-ci.yml
@@ -145,7 +145,7 @@ build:windows_python:
   script:
     - python -m pip install virtualenv
     - virtualenv venv
-    - source venv/bin/activate
+    - venv\Scripts\Activate.ps1
     # Numpy dependancy for unit test
     - python -m pip install numpy
     - export AIDGE_INSTALL=`pwd`/install