diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index cf9b7c4108d..f497a889f0f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -39,7 +39,7 @@
 # Using the `$SKIP` var is preferable to using `git commit --no-verify`
 # because it won't prevent catching other, unrelated issues.
 
-exclude: ^lib/.*$
+exclude: ^(lib/|src/test/.*data/).*$
 default_language_version:
   python: python3
 repos:
@@ -111,3 +111,14 @@ repos:
     - commit
     - push
     - manual
+- repo: local
+  hooks:
+  - id: line-length
+    name: line-length
+    description: Check for lines longer 100 and brakes them before 80.
+    entry: ./scripts/line_length.py
+    stages:
+    - commit
+    - push
+    language: python
+    files: \.(c|cpp|h)$