diff --git a/.github/workflows/test-only.yml b/.github/workflows/test-only.yml
index 7a0eb49b..f7b3def0 100644
--- a/.github/workflows/test-only.yml
+++ b/.github/workflows/test-only.yml
@@ -33,7 +33,7 @@ jobs:
           done
       - name: Lint .pot template with dennis
         run: |
-          pip install "$(grep -E '^dennis ?>=' requirements.txt)"
+          pip install "$(grep -E '^dennis ?>=' requirements-dev.txt)"
           dennis-cmd lint --strict changedetectionio/translations/messages.pot
       - name: Lint .po files with dennis
         run: |
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index da3d99a9..899591d6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,6 +4,8 @@ I am no professional flask developer, if you know a better way that something ca
 
 Otherwise, it's always best to PR into the `master` branch.
 
+Install the development and test dependencies with `pip install -r requirements-dev.txt`.
+
 Please be sure that all new functionality has a matching test!
 
 Use `pytest` to validate/test, you can run the existing tests as `pytest tests/test_notification.py` for example
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 00000000..cf8c6450
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,5 @@
+-r requirements.txt
+
+ruff >= 0.11.2
+pre_commit >= 4.2.0
+dennis >= 1.3.0
diff --git a/requirements.txt b/requirements.txt
index 5aa090e8..5e1f7f94 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -157,12 +157,7 @@ rank-bm25>=0.2.2
 # Needed for testing, cross-platform for process and system monitoring
 psutil==7.2.2
 
-ruff >= 0.11.2
-pre_commit >= 4.2.0
-dennis >= 1.3.0
-
 # For events between checking and socketio updates
 blinker
 pytest-xdist
 
-