diff --git a/.commit-check.yml b/.commit-check.yml
index 35052d6..f1f725f 100644
--- a/.commit-check.yml
+++ b/.commit-check.yml
@@ -15,7 +15,7 @@ checks:
     suggest: run command `git checkout -b type/branch_name`
 
   - check: author_name
-    regex: ^[A-Za-z ,.\'-]+$|.*(\[bot])
+    regex: ^[A-Za-zÀ-ÖØ-öø-ÿ\u0100-\u017F\u0180-\u024F ,.\'-]+$|.*(\[bot])
     error: The committer name seems invalid
     suggest: run command `git config user.name "Your Name"`
 
diff --git a/README.md b/README.md
index 10a43ff..9e9df7b 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,9 @@
 [![Main](https://github.com/commit-check/commit-check-action/actions/workflows/main.yaml/badge.svg)](https://github.com/commit-check/commit-check-action/actions/workflows/main.yaml)
 [![Commit Check](https://github.com/commit-check/commit-check-action/actions/workflows/commit-check.yml/badge.svg)](https://github.com/commit-check/commit-check-action/actions/workflows/commit-check.yml)
 ![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/commit-check/commit-check-action)
-[![Used by](https://img.shields.io/static/v1?label=Used%20by&message=51&color=informational&logo=slickpic)](https://github.com/commit-check/commit-check-action/network/dependents)<!-- used by badge -->
+[![Used by](https://img.shields.io/static/v1?label=Used%20by&message=67&color=informational&logo=slickpic)](https://github.com/commit-check/commit-check-action/network/dependents)<!-- used by badge -->
 [![GitHub marketplace](https://img.shields.io/badge/Marketplace-commit--check--action-blue)](https://github.com/marketplace/actions/commit-check-action)
+[![slsa-badge](https://slsa.dev/images/gh-badge-level3.svg)](https://github.com/commit-check/commit-check-action/blob/a2873ca0482dd505c93fb51861c953e82fd0a186/action.yml#L59-L69)
 
 A Github Action for checking commit message formatting, branch naming, committer name, email, commit signoff and more.
 
@@ -54,6 +55,26 @@ jobs:
           pr-comments: ${{ github.event_name == 'pull_request' }}
 ```
 
+## Used By
+
+<p align="center">
+  <a href="https://github.com/apache"><img src="https://avatars.githubusercontent.com/u/47359?s=200&v=4" alt="Apache" width="28"/></a>
+  <strong>Apache</strong>&nbsp;&nbsp;
+  <a href="https://github.com/discovery-unicamp"><img src="https://avatars.githubusercontent.com/u/112810766?s=200&v=4" alt="discovery-unicamp" width="28"/></a>
+  <strong>discovery-unicamp</strong>&nbsp;&nbsp;
+  <a href="https://github.com/TexasInstruments"><img src="https://avatars.githubusercontent.com/u/24322022?s=200&v=4" alt="Texas Instruments" width="28"/></a>
+  <strong>Texas Instruments</strong>&nbsp;&nbsp;
+  <a href="https://github.com/opencadc"><img src="https://avatars.githubusercontent.com/u/13909060?s=200&v=4" alt="OpenCADC" width="28"/></a>
+  <strong>OpenCADC</strong>&nbsp;&nbsp;
+  <a href="https://github.com/extrawest"><img src="https://avatars.githubusercontent.com/u/39154663?s=200&v=4" alt="Extrawest" width="28"/></a>
+  <strong>Extrawest</strong>
+  <a href="https://github.com/Chainlift"><img src="https://avatars.githubusercontent.com/u/204404276?s=200&v=4" alt="Chainlift" width="28"/></a>
+  <strong>Chainlift</strong>&nbsp;&nbsp;
+  <a href="https://github.com/mila-iqia"><img src="https://avatars.githubusercontent.com/u/11724251?s=200&v=4" alt="Mila" width="28"/></a>
+  <strong>Mila</strong>&nbsp;&nbsp;
+  <strong> and <a href="https://github.com/commit-check/commit-check-action/network/dependents">many more</a>.</strong>
+</p>
+
 ## Optional Inputs
 
 ### `message`
diff --git a/action.yml b/action.yml
index d23acfc..cdd75ea 100644
--- a/action.yml
+++ b/action.yml
@@ -51,9 +51,23 @@ runs:
           # https://github.com/pypa/setuptools/issues/3269
           export DEB_PYTHON_INSTALL_LAYOUT=deb
         fi
+
+        # Set up virtual environment
         python3 -m venv venv
         source venv/bin/activate
-        python3 -m pip install -r "$GITHUB_ACTION_PATH/requirements.txt"
+
+        # Download artifact
+        python3 -m pip download -r "$GITHUB_ACTION_PATH/requirements.txt"
+
+        # Verify artifact attestations
+        if ! gh attestation verify commit_check-*.whl -R commit-check/commit-check; then
+            echo "Artifact verification failed. Aborting installation."
+            exit 1
+        fi
+
+        # Install artifact
+        python3 -m pip install commit_check-*.whl PyGithub-*.whl
+
         python3 "$GITHUB_ACTION_PATH/main.py"
       env:
         MESSAGE: ${{ inputs.message }}
diff --git a/requirements.txt b/requirements.txt
index fa52544..e16e5b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # Install commit-check CLI
 # For details please see: https://github.com/commit-check/commit-check
-commit-check==0.9.3
+commit-check==0.9.6
 # Interact with the GitHub API.
-PyGithub==2.6.0
+PyGithub==2.6.1