diff --git a/Gemfile.lock b/Gemfile.lock
index 3c6b669..1d1e695 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
     octokit (4.13.0)
       sawyer (~> 0.8.0, >= 0.5.3)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rack-protection (2.0.4)
       rack
     ruby2_keywords (0.0.4)