diff --git a/Gemfile.lock b/Gemfile.lock
index 54e8bd5..2cf0a4d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -113,7 +113,7 @@ GEM
       mini_portile2 (~> 2.1.0)
       pkg-config (~> 1.1.7)
     pkg-config (1.1.7)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-mini-profiler (0.10.1)
       rack (>= 1.2.0)
     rack-test (0.6.3)