diff --git a/Gemfile.lock b/Gemfile.lock
index c35b571..ae3ff84 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
     diff-lcs (1.1.3)
     gherkin (2.5.2)
       json (>= 1.4.6)
-    json (1.6.1)
+    json (2.3.1)
     linecache (0.46)
       rbx-require-relative (> 0.0.4)
     linecache19 (0.5.12)