diff --git a/Gemfile.lock b/Gemfile.lock
index 6a8b2754..bb49286c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -119,7 +119,7 @@ GEM
     pandoc-ruby (2.1.4)
     parallel (1.20.0)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.6.3)
     rack-livereload (0.3.17)
       rack
     rack-test (0.6.3)