diff --git a/Gemfile.lock b/Gemfile.lock
index 4820418..a10b16b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
     octokit (4.3.0)
       sawyer (~> 0.7.0, >= 0.5.3)
     public_suffix (1.5.3)
-    rack (1.6.5)
+    rack (1.6.12)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)