diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 16bbf56c9d7ba019719b67b601c6a0475406ca46..e62c8829fd23461d3af02c5699935e9367804a06 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,6 +18,15 @@ build_html:
   dependencies:
     - build_js
   image: python:3
+  variables:
+    PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
+  cache:
+    paths:
+      - .cache/pip
+      - venv/
+  before_script:
+    - python3 -m venv --copies venv
+    - source venv/bin/activate
   script:
     - pip install -r requirements.txt
     - make html