diff --git a/Gemfile.lock b/Gemfile.lock
index 7ad4b1d..9fd1f20 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
     omniauth-oauth2 (1.7.2)
       oauth2 (~> 1.4)
       omniauth (>= 1.9, < 3)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rack-protection (2.1.0)
       rack
     ruby2_keywords (0.0.5)