diff --git a/Gemfile.lock b/Gemfile.lock
index 86c1728..b52af7b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     diff-lcs (1.3)
     dotenv (2.2.1)
     hashdiff (0.3.7)
-    json (2.1.0)
+    json (2.3.1)
     method_source (0.9.0)
     pry (0.11.3)
       coderay (~> 1.1.0)