diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..cbc4fe9
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+    - name: Run tests
+      run: |
+        python -m unittest test_sbg.py
diff --git a/README.md b/README.md
index 679ac17..f3cf778 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # GitLab Group Cloner & Updater
 
+[![CI](https://github.com/tutunak/sb-gitlab/actions/workflows/ci.yml/badge.svg)](https://github.com/sb-gitlab/sb-gitlab/actions/workflows/ci.yml)
+
 A command-line Python tool to **clone** or **update** (_pull_) **all** GitLab repositories under one or more groups (including nested subgroups), organizing them into a mirror directory tree that matches each project’s namespace.
 
 ---
@@ -41,7 +43,7 @@ A command-line Python tool to **clone** or **update** (_pull_) **all** GitLab re
 ## Usage
 
 ```bash
-python clone_or_update_groups_by_namespace.py \
+python sbg.py \
   --gitlab-url     \
   --token          \
   --group-ids      [ …] \
@@ -69,7 +71,7 @@ Arguments:
 Clone or update all projects under group **42** into `./repos` via HTTPS:
 
 ```bash
-python clone_or_update_groups_by_namespace.py \
+python sbg.py \
   --gitlab-url https://gitlab.com \
   --token    $GITLAB_TOKEN \
   --group-ids 42 \
@@ -79,7 +81,7 @@ python clone_or_update_groups_by_namespace.py \
 Clone or update projects from two groups by full path, using SSH:
 
 ```bash
-python clone_or_update_groups_by_namespace.py \
+python sbg.py \
   --gitlab-url https://gitlab.example.com \
   --token    $GITLAB_TOKEN \
   --group-ids team/backend team/frontend \