diff --git a/Gemfile.lock b/Gemfile.lock
index 7563f28..586116d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
       simplecov
     diff-lcs (1.3)
     docile (1.1.5)
-    json (2.1.0)
+    json (2.3.1)
     puma (3.12.4)
     rack (1.6.13)
     rack-console (1.3.1)