diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 576d1a945668f4f7d878859c65e25fcc7fb39b6f_LmdpdGxhYi1jaS55bWw=..3fa274ea3a02603e5f9c55dfee852af64c3ca4ca_LmdpdGxhYi1jaS55bWw= 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,6 +17,13 @@
     script:
       - ~/.local/bin/flake8 heptapod setup.py hgext3rd
 
+install:
+  stage: test
+  image: octobus/ci-py2
+  before_script: []
+  script:
+    - pip install .
+
 tests-5.2:
    stage: test
    image: octobus/ci-py2-hgext3rd:hg-5.2