diff --git a/Gemfile.lock b/Gemfile.lock
index 08cc40b..14c0c9d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -169,7 +169,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (1.6.10)
+    rack (1.6.13)
     retryable (2.0.4)
     ridley (4.4.2)
       addressable