diff --git a/Gemfile.lock b/Gemfile.lock
index 809da3e..0a9cedf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,7 +94,7 @@ GEM
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
     io-like (0.3.0)
-    json (2.1.0)
+    json (2.3.1)
     launchy (2.4.3)
       addressable (~> 2.3)
     method_source (0.9.0)