diff --git a/assets/dora/Gemfile.lock b/assets/dora/Gemfile.lock
index b5476b130..e5ff19fac 100644
--- a/assets/dora/Gemfile.lock
+++ b/assets/dora/Gemfile.lock
@@ -3,7 +3,7 @@ GEM
   specs:
     base64 (0.3.0)
     diff-lcs (1.6.2)
-    json (2.20.0)
+    json (2.21.1)
     logger (1.7.0)
     mustermann (3.0.4)
       ruby2_keywords (~> 0.0.1)
diff --git a/assets/dora/vendor/cache/json-2.20.0.gem b/assets/dora/vendor/cache/json-2.20.0.gem
deleted file mode 100644
index 8900ad3be..000000000
Binary files a/assets/dora/vendor/cache/json-2.20.0.gem and /dev/null differ
diff --git a/assets/dora/vendor/cache/json-2.21.1.gem b/assets/dora/vendor/cache/json-2.21.1.gem
new file mode 100644
index 000000000..159c00aef
Binary files /dev/null and b/assets/dora/vendor/cache/json-2.21.1.gem differ