diff --git a/src/main/java/etunicorn/GitHeaderInterceptor.java b/src/main/java/etunicorn/GitHeaderInterceptor.java
new file mode 100644
index 0000000..aefbe19
--- /dev/null
+++ b/src/main/java/etunicorn/GitHeaderInterceptor.java
@@ -0,0 +1,49 @@
+package etunicorn;
+
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
+
+import javax.servlet.http.HttpServletResponse;
+import java.io.*;
+
+/**
+ * Created by geoffrey on 29/01/17.
+ */
+public class GitHeaderInterceptor extends HandlerInterceptorAdapter {
+
+    private String version = "inconnue";
+
+    public GitHeaderInterceptor() {
+        super();
+        try {
+            String[] commande = {"git", "describe", "--tags", "--dirty"};
+            Process p = Runtime.getRuntime().exec(commande);
+            BufferedReader output = new BufferedReader(new InputStreamReader(p.getInputStream()));
+            p.waitFor();
+            this.version = output.readLine();
+        } catch(IOException e) {
+        } catch (InterruptedException e) {
+        }
+    }
+
+    @Override
+    public boolean preHandle(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        response.addHeader("X-Version", this.version);
+        return super.preHandle(request, response, handler);
+    }
+
+    @Override
+    public void postHandle(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
+        super.postHandle(request, response, handler, modelAndView);
+    }
+
+    @Override
+    public void afterCompletion(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
+        super.afterCompletion(request, response, handler, ex);
+    }
+
+    @Override
+    public void afterConcurrentHandlingStarted(javax.servlet.http.HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
+        super.afterConcurrentHandlingStarted(request, response, handler);
+    }
+}
diff --git a/src/main/java/etunicorn/WebMvcConfig.java b/src/main/java/etunicorn/WebMvcConfig.java
new file mode 100644
index 0000000..7c668ea
--- /dev/null
+++ b/src/main/java/etunicorn/WebMvcConfig.java
@@ -0,0 +1,18 @@
+package etunicorn;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.*;
+
+/**
+ * Created by geoffrey on 29/01/17.
+ */
+
+@Configuration
+public class WebMvcConfig extends WebMvcConfigurerAdapter {
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        registry.addInterceptor(new GitHeaderInterceptor());
+    }
+}
+
--
libgit2 0.21.2