diff --git a/.gitea/workflows/ci-cd.yaml b/.gitea/workflows/ci-cd.yaml
index 8686d57..6d48bf4 100644
--- a/.gitea/workflows/ci-cd.yaml
+++ b/.gitea/workflows/ci-cd.yaml
@@ -79,7 +79,34 @@ jobs:
         run: go build ./...
 
       - name: Run tests with coverage
-        run: go test ./... -cover -v
+        run: |
+          # Run tests with coverage
+          go test ./... -coverprofile=coverage.out -v
+          go tool cover -func=coverage.out > coverage.txt
+          
+          # Extract coverage percentage
+          COVERAGE=$(grep "total:" coverage.txt | grep -oP '\d+\.\d+' | head -1)
+          echo "Coverage: ${COVERAGE}%"
+          
+          # Determine badge color
+          if (( $(echo "$COVERAGE >= 80" | bc -l) )); then
+            COLOR="brightgreen"
+          elif (( $(echo "$COVERAGE >= 50" | bc -l) )); then
+            COLOR="yellow"
+          else
+            COLOR="red"
+          fi
+          
+          # Update README with new badge
+          BADGE_URL="https://img.shields.io/badge/coverage-${COVERAGE}%-${COLOR}?style=flat-square"
+          sed -i "s|https://img.shields.io/badge/coverage-.*-.*?style=flat-square|${BADGE_URL}|" README.md
+          
+          # Commit and push the update
+          git config --global user.name "CI Bot"
+          git config --global user.email "ci@arcodange.fr"
+          git add README.md
+          git commit -m "🤖 chore: update coverage badge to ${COVERAGE}%" || echo "No coverage change to commit"
+          git push || echo "Push failed - may be duplicate commit"
 
       - name: Run go fmt
         run: go fmt ./...
diff --git a/README.md b/README.md
index 69fc910..4f5f4e9 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/arcodange/DanceLessonsCoach)](https://goreportcard.com/report/github.com/arcodange/DanceLessonsCoach)
 [![Version](https://img.shields.io/badge/version-1.4.0-blue.svg)](https://gitea.arcodange.fr/arcodange/DanceLessonsCoach/releases)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
+[![Coverage](https://img.shields.io/badge/coverage-0%-red?style=flat-square)](https://gitea.arcodange.lab/arcodange/dance-lessons-coach)
 
 A Go project demonstrating idiomatic package structure, CLI implementation, and JSON API with Chi router.
 =======