diff --git a/Gemfile.lock b/Gemfile.lock
index bb63dd0..8eb53ce 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
       slop (~> 3.4)
     pry-nav (0.2.4)
       pry (>= 0.9.10, < 0.11.0)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.2)