diff --git a/tool/bundler/dev_gems.rb b/tool/bundler/dev_gems.rb
index 2ed0fba3c2..a25dcf3ea3 100644
--- a/tool/bundler/dev_gems.rb
+++ b/tool/bundler/dev_gems.rb
@@ -13,7 +13,7 @@ gem "rspec-core", "~> 3.12"
 gem "rspec-expectations", "~> 3.12"
 gem "rspec-mocks", "~> 3.12"
 gem "uri", "~> 0.13.0"
-gem "logger", "~> 1.6.4"
+gem "logger", "~> 1.6.5"
 
 group :doc do
   gem "nronn", "~> 0.11.1", platform: :ruby