diff --git a/Gemfile.lock b/Gemfile.lock
index 486da97..2627099 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,7 +16,7 @@ GEM
     parser (2.7.1.4)
       ast (~> 2.4.1)
     pdfkit (0.8.4.3.1)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-protection (2.0.8.1)
       rack
     rack-test (1.1.0)