diff --git a/Gemfile.lock b/Gemfile.lock
index 49d9297bb30..173c18401e1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
     chunky_png (1.3.11)
     coderay (1.1.2)
     colored2 (3.1.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.6)
     connection_pool (2.2.2)
     cose (0.11.0)
       cbor (~> 0.5.9)