diff --git a/backend/package.json b/backend/package.json
index 7a27b1c43..43b7fb87c 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -33,7 +33,7 @@
     "gradido-database": "file:../database",
     "graphql": "^15.5.1",
     "graphql-request": "5.0.0",
-    "helmet": "^6.2.0",
+    "helmet": "^5.1.1",
     "i18n": "^0.15.1",
     "jose": "^4.14.4",
     "lodash.clonedeep": "^4.5.0",
diff --git a/backend/yarn.lock b/backend/yarn.lock
index ffda08949..234dc817a 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -3838,10 +3838,10 @@ he@1.2.0, he@^1.2.0:
   resolved "https://registry.yarnpkg.com/he/-/he-1.2.0.tgz#84ae65fa7eafb165fddb61566ae14baf05664f0f"
   integrity sha512-F/1DnUGPopORZi0ni+CvrCgHQ5FyEAHRLSApuYWMmrbSwoN2Mn/7k+Gl38gJnR7yyDZk6WLXwiGod1JOWNDKGw==
 
-helmet@^6.2.0:
-  version "6.2.0"
-  resolved "https://registry.yarnpkg.com/helmet/-/helmet-6.2.0.tgz#c29d62014be4c70b8ef092c9c5e54c8c26b8e16e"
-  integrity sha512-DWlwuXLLqbrIOltR6tFQXShj/+7Cyp0gLi6uAb8qMdFh/YBBFbKSgQ6nbXmScYd8emMctuthmgIa7tUfo9Rtyg==
+helmet@^5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/helmet/-/helmet-5.1.1.tgz#609823c5c2e78aea62dd9afc8f544ca409da5e85"
+  integrity sha512-/yX0oVZBggA9cLJh8aw3PPCfedBnbd7J2aowjzsaWwZh7/UFY0nccn/aHAggIgWUFfnykX8GKd3a1pSbrmlcVQ==
 
 highlight.js@^10.7.1:
   version "10.7.3"