diff --git a/builder/Gemfile.lock b/builder/Gemfile.lock
index 568c706a35e..8a0ac4cf8db 100644
--- a/builder/Gemfile.lock
+++ b/builder/Gemfile.lock
@@ -229,7 +229,8 @@ GEM
       rack (>= 2.0.0)
     rack-proxy (0.7.7)
       rack
-    rack-session (2.0.0)
+    rack-session (2.1.0)
+      base64 (>= 0.1.0)
       rack (>= 3.0.0)
     rack-test (2.2.0)
       rack (>= 1.3)