diff --git a/Gemfile.lock b/Gemfile.lock
index 12a028a377..b9100c8e4e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     http_parser.rb (0.8.0)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
-    io-event (1.2.2)
+    io-event (1.2.3)
     kramdown (2.4.0)
       rexml
     listen (3.8.0)