diff --git a/mcp-client-ruby/Gemfile b/mcp-client-ruby/Gemfile
index d9f3d541..dfb9b637 100644
--- a/mcp-client-ruby/Gemfile
+++ b/mcp-client-ruby/Gemfile
@@ -2,7 +2,6 @@
 
 source "https://rubygems.org"
 
-gem "anthropic"
-gem "base64"
+gem "anthropic", '>= 1.60.0'
 gem "dotenv"
 gem "mcp", '>= 0.15.0'