diff --git a/builder/Gemfile.lock b/builder/Gemfile.lock
index 78cfb7b5935..b602fb43ea9 100644
--- a/builder/Gemfile.lock
+++ b/builder/Gemfile.lock
@@ -74,7 +74,7 @@ GEM
       uri (>= 0.13.1)
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
-    base64 (0.2.0)
+    base64 (0.3.0)
     bcrypt (3.1.20)
     benchmark (0.4.0)
     bigdecimal (3.2.0)