diff --git a/examples/demo/package.json b/examples/demo/package.json
index c26d6d0..bac1462 100644
--- a/examples/demo/package.json
+++ b/examples/demo/package.json
@@ -8,7 +8,7 @@
   "private": true,
   "dependencies": {
     "@jerni/store-mongo": "^0.5.9",
-    "express": "^4.17.1",
+    "express": "^4.17.3",
     "jerni": "^1.1.4",
     "lodash": "^4.17.19",
     "nanoid": "^2.1.6"
diff --git a/examples/demo/yarn.lock b/examples/demo/yarn.lock
index fb5fceb..b8443da 100644
--- a/examples/demo/yarn.lock
+++ b/examples/demo/yarn.lock
@@ -1807,12 +1807,7 @@ safe-buffer@5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
 
-safe-buffer@^5.1.2:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.0.tgz#b74daec49b1148f88c64b68d49b1e815c1f2f519"
-  integrity sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg==
-
-safe-buffer@~5.2.0:
+safe-buffer@^5.1.2, safe-buffer@~5.2.0:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
   integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==