diff --git a/asf-site-src/Gemfile.lock b/asf-site-src/Gemfile.lock
index 0cc863df..a5042d34 100644
--- a/asf-site-src/Gemfile.lock
+++ b/asf-site-src/Gemfile.lock
@@ -123,7 +123,7 @@ GEM
     parslet (2.0.0)
     prism (1.9.0)
     public_suffix (7.0.5)
-    rack (3.1.20)
+    rack (3.1.21)
     rack-livereload (0.6.1)
       rack (>= 3.0, < 3.2)
     rackup (2.3.1)