diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7bb855f9bce0a915a594a31f81a820da44235e2c..0fce71c217f9d336829d9a9f474da4c7c586ed71 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -111,6 +111,15 @@ run-doc-test:
     - pip install -r requirements_doc.txt
     - sphinx-build -b html docs_sphinx public
 
+run-lint:
+  variables:
+    QT_API: pyside2
+  image: python:3.10
+  stage: test
+  script:
+    - pip install black velin
+    - velin . --check --black
+
 pages:
   variables:
     QT_API: pyqt5
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0decc26863e234161203286245e88cfe4cc7422a..444f779da9082a48a86ce6ca147800e748a27d4b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -18,3 +18,7 @@ repos:
     hooks:
       - id: isort
         name: isort (python)
+-   repo: https://github.com/Carreau/velin
+    rev: 0.0.12
+    hooks:
+    - id: velin
diff --git a/b_asic/operation.py b/b_asic/operation.py
index 67a95e832d7c1af9d7410a40f8d91a2099058431..3762c1b467eb41f34f5f027ef2762b98175f38df 100644
--- a/b_asic/operation.py
+++ b/b_asic/operation.py
@@ -253,7 +253,7 @@ class Operation(GraphComponent, SignalSourceProvider):
             that are encountered, and be updated with their new values.
         prefix : str, optional
             Used as a prefix for the key string when storing results/delays.
-        bits_override ; int, optional
+        bits_override : int, optional
             Specifies a word length override when truncating inputs
             which ignores the word length specified by the input signal.
         truncate : bool, default: True