diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 196105fd5fc139bf229e3d77f625e08726d1dc65..d6c77a108dc33c2db8681682e844906ed6da2424 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,12 +8,19 @@ stages:
   - test
 
 install:
+  stage: install
   script:
   - apt-get update && apt-get install --no-install-recommends -y python3 python3-pip python3-selenium python3-virtualenv chromium-driver make xauth xvfb tesseract-ocr tesseract-ocr-eng tesseract-ocr-fra ocrmypdf
   - ln -s /usr/bin/python3 /usr/bin/python
   - virtualenv --python=/usr/bin/python3 .
   - source bin/activate
   - pip3 install -r requirements.txt
+  cache:
+    key: $CI_COMMIT_REF_SLUG
+    paths:
+      - bin/
+      - lib/
+      - pyvenv.cfg
 
 test_ppparis:
   stage: test