diff --git a/demo/Gemfile.lock b/demo/Gemfile.lock
index 5daa89e..73f9521 100644
--- a/demo/Gemfile.lock
+++ b/demo/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
     ffi (1.17.1-x86_64-linux-gnu)
     ffi (1.17.1-x86_64-linux-musl)
     gemoji (4.0.1)
-    json (2.9.1)
+    json (2.19.9)
     language_server-protocol (3.17.0.3)
     listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)