diff --git a/package-lock.json b/package-lock.json
index 50d1be85..933de04e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13394,16 +13394,17 @@
       }
     },
     "node_modules/gatsby-plugin-react-helmet": {
-      "version": "4.14.0",
-      "license": "MIT",
+      "version": "6.13.1",
+      "resolved": "https://registry.npmjs.org/gatsby-plugin-react-helmet/-/gatsby-plugin-react-helmet-6.13.1.tgz",
+      "integrity": "sha512-Fwgf2UDOo1LQgw1vUmGmDMK5hXVrIXDR92URzu4DylQWgyfycfQ3D9FdU2JZ8jB6F3OI6Yx6YHC7zL3OAL7iOw==",
       "dependencies": {
-        "@babel/runtime": "^7.15.4"
+        "@babel/runtime": "^7.20.13"
       },
       "engines": {
-        "node": ">=12.13.0"
+        "node": ">=18.0.0"
       },
       "peerDependencies": {
-        "gatsby": "^3.0.0-next.0",
+        "gatsby": "^5.0.0-next",
         "react-helmet": "^5.1.3 || ^6.0.0"
       }
     },
@@ -27611,7 +27612,7 @@
     },
     "theme": {
       "name": "@primer/gatsby-theme-doctocat",
-      "version": "5.1.0",
+      "version": "5.1.1",
       "license": "MIT",
       "dependencies": {
         "@babel/core": "^7.19.1",
@@ -27639,7 +27640,7 @@
         "gatsby-plugin-manifest": "^3.14.0",
         "gatsby-plugin-mdx": "^1.0.13",
         "gatsby-plugin-page-creator": "^3.14.0",
-        "gatsby-plugin-react-helmet": "^4.14.0",
+        "gatsby-plugin-react-helmet": "^6.13.1",
         "gatsby-plugin-remove-trailing-slashes": "^3.14.0",
         "gatsby-plugin-styled-components": "^4.14.0",
         "gatsby-source-filesystem": "^3.14.0",
diff --git a/theme/package.json b/theme/package.json
index 592c4800..8a9403d0 100644
--- a/theme/package.json
+++ b/theme/package.json
@@ -59,7 +59,7 @@
     "gatsby-plugin-manifest": "^3.14.0",
     "gatsby-plugin-mdx": "^1.0.13",
     "gatsby-plugin-page-creator": "^3.14.0",
-    "gatsby-plugin-react-helmet": "^4.14.0",
+    "gatsby-plugin-react-helmet": "^6.13.1",
     "gatsby-plugin-remove-trailing-slashes": "^3.14.0",
     "gatsby-plugin-styled-components": "^4.14.0",
     "gatsby-source-filesystem": "^3.14.0",