diff --git a/Tests/Server/Gemfile.lock b/Tests/Server/Gemfile.lock
index 19d42e5..daa8ef8 100644
--- a/Tests/Server/Gemfile.lock
+++ b/Tests/Server/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
     daemons (1.1.9)
     diff-lcs (1.2.3)
     eventmachine (1.0.3)
-    json (1.7.7)
+    json (2.3.0)
     linecache (0.46)
       rbx-require-relative (> 0.0.4)
     method_source (0.8.1)