diff --git a/expression-ruby/Gemfile.lock b/expression-ruby/Gemfile.lock
index 9a4a8b4..40d37be 100644
--- a/expression-ruby/Gemfile.lock
+++ b/expression-ruby/Gemfile.lock
@@ -10,7 +10,7 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    bigdecimal (3.1.8)
+    bigdecimal (4.1.3)
     diff-lcs (1.6.2)
     rake (13.4.2)
     rake-compiler (1.3.1)