diff --git a/Gemfile.lock b/Gemfile.lock
index c2916bd01c..20c6290f33 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,7 +110,7 @@ GEM
     chunky_png (1.4.0)
     coderay (1.1.3)
     colored2 (3.1.2)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.2.0)
     connection_pool (2.3.0)
     cose (1.3.0)
       cbor (~> 0.5.9)