diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eac6fbcf324796c71c4b025749146570d0fe36ad..502fc24949fd11587ca7e979aa62e9c2c52013ad 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -69,6 +69,7 @@ jobs:
                 curl -L -O https://tiker.net/ci-support-v0
                 . ./ci-support-v0
                 build_py_project_in_venv
+                pip install -e .[test]
                 python -m pip install mypy numpy
                 ./run-mypy.sh
 
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b1be73c3d3e96089e745db21cc015c3870baca8e..b3478be61d06687fa68b13a406968c3a2172bc38 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -45,6 +45,7 @@ Mypy:
     curl -L -O https://tiker.net/ci-support-v0
     . ./ci-support-v0
     build_py_project_in_venv
+    pip install -e .[test]
     python -m pip install mypy numpy
     ./run-mypy.sh
   tags: