diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0654a55548e8d931d45e7dbd224ab768967525dd..c27eea59f99c67cb3061cb3a973c2a9c7468d1c0 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 before_script:
-  - apt-get update -qq && apt-get install -y -qq python-virtualenv python3
+  - apt-get update -qq && apt-get install -y -qq python-virtualenv python3 python3-dev
   - virtualenv venv -p$(which python3)
   - . venv/bin/activate
   - pip install -r requirements.txt