diff --git a/Gemfile.lock b/Gemfile.lock
index 5e84b84..cd65eb0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,7 +94,7 @@ GEM
     prawn (2.3.0)
       pdf-core (~> 0.8.1)
       ttfunk (~> 1.6)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-protection (2.1.0)
       rack
     rack-test (0.6.3)