diff --git a/Gemfile.lock b/Gemfile.lock
index 2364ba6092..07fd46f1d5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -243,7 +243,7 @@ GEM
     multi_xml (0.6.0)
     multipart-post (2.1.1)
     mustache (1.1.1)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.12.0)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)