diff --git a/docs/src/content/docs/challenges/angular/55-back-button-navigation.md b/docs/src/content/docs/challenges/angular/55-back-button-navigation.md
index 524f352..ffbd652 100644
--- a/docs/src/content/docs/challenges/angular/55-back-button-navigation.md
+++ b/docs/src/content/docs/challenges/angular/55-back-button-navigation.md
@@ -3,6 +3,7 @@ title: 🟠 Back-Button-Navigation
 description: Challenge 55 is about overriding browser back button navigation
 author: Ioannis-Tsironis
 contributors:
+  - tsironis13
 challengeNumber: 55
 command: angular-back-button-navigation
 sidebar: