diff --git a/.github/workflows/cicd.yaml b/.github/workflows/cicd.yaml
index 743b076..6dfc4bf 100644
--- a/.github/workflows/cicd.yaml
+++ b/.github/workflows/cicd.yaml
@@ -12,12 +12,12 @@ jobs:
 
     steps:
     - name: 🔄 Checkout code
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: 🐍 Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
-        python-version: 3.x  # Specify your desired Python version
+        python-version: 3.11
 
     - name: 📦 Install dependencies
       run: pip install -r requirements-dev.txt  # Replace with your requirements file
@@ -31,4 +31,27 @@ jobs:
     - name: ☂️ Upload coverage reports to Codecov
       uses: codecov/codecov-action@v3
       env:
-        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
\ No newline at end of file
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+
+    - name: 🗃️ Uncache Mutation Testing Artifacts
+      uses: actions/cache/restore@v3
+      with:
+        path: .mutmut-cache
+        key: ${{ runner.os }}-mutmut-cache-${{ hashFiles('bookshelf/*.py') }}
+
+    - name: 🦠 Run Mutation Tests
+      run: | 
+        mutmut run --no-progress --CI
+        mutmut html
+
+    - name: 📤 Upload Mutation Test Report
+      uses: actions/upload-artifact@v2
+      with:
+        name: mutmut-html-report
+        path: html/bookshelf
+
+    - name: 🗃️ Cache Mutation Test Cache
+      uses: actions/cache/save@v3
+      with:
+        path: .mutmut-cache
+        key: ${{ runner.os }}-mutmut-cache-${{ hashFiles('bookshelf/*.py') }}
diff --git a/.gitignore b/.gitignore
index 489eb25..05eeb9a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -180,4 +180,7 @@ docs/.env
 docs/.env.production
 
 # macOS-specific files
-docs/.DS_Store
\ No newline at end of file
+docs/.DS_Store
+
+html/
+.mutmut-cache
\ No newline at end of file
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0445f91..8750e5b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,4 +4,5 @@ assertpy~=1.1.0
 pytest==7.4.3
 pytest-cov==4.1.0
 setuptools==68.2.2
-flake8~=6.1.0
\ No newline at end of file
+flake8~=6.1.0
+mutmut~=2.4.4
\ No newline at end of file