diff --git a/Gemfile.lock b/Gemfile.lock
index 2763757..eda97ff 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,7 +8,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     byebug (10.0.0)
-    castle-rb (3.4.2)
+    castle-rb (3.5.1)
     coveralls_reborn (0.10.0)
       json (~> 2.1)
       simplecov (~> 0.15.1)