diff --git a/Gemfile.lock b/Gemfile.lock
index 0af67575c7..9cfe8b4c4e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,7 @@ GEM
     comp_tree (1.1.3)
     diff-lcs (1.4.4)
       comp_tree (>= 1.1.3)
-    json (2.6.1)
+    json (2.5.1)
     mime-types (1.25)
     rack (1.6.13)
     rake (12.3.3)