diff --git a/.github/workflows/on_pr_to_main.yaml b/.github/workflows/on_pr_to_main.yaml
index ea8811bd..83d114d3 100644
--- a/.github/workflows/on_pr_to_main.yaml
+++ b/.github/workflows/on_pr_to_main.yaml
@@ -52,7 +52,7 @@ jobs:
       # install your root project, if required
       #----------------------------------------------
       - name: Install project
-        run: poetry install --no-interaction
+        run: poetry install --no-interaction --extras "server"
       #----------------------------------------------
       #              run test suite
       #----------------------------------------------
diff --git a/.github/workflows/on_push_to_feature.yaml b/.github/workflows/on_push_to_feature.yaml
index b3525a10..855dd59a 100644
--- a/.github/workflows/on_push_to_feature.yaml
+++ b/.github/workflows/on_push_to_feature.yaml
@@ -50,7 +50,7 @@ jobs:
       # install your root project, if required
       #----------------------------------------------
       - name: Install project
-        run: poetry install --no-interaction
+        run: poetry install --no-interaction --extras "server"
       #----------------------------------------------
       #              run test suite
       #----------------------------------------------