diff --git a/api/ruby/basics-of-authentication/Gemfile.lock b/api/ruby/basics-of-authentication/Gemfile.lock
index 296978587..123e53bc9 100644
--- a/api/ruby/basics-of-authentication/Gemfile.lock
+++ b/api/ruby/basics-of-authentication/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     json (1.7.7)
     mime-types (1.21)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.3.2)
       rack
     rest-client (1.6.7)