diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 07a54d2..1d3e565 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v7
       - uses: actions/setup-node@v7
         with:
-          node-version: 26
+          node-version: 24
           cache: npm
 
       - name: Install NPM dependencies
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bbddd42..630c7c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Changed
 
 - Update runtime and development dependencies to compatible current versions.
-- Move the minimum supported runtime to Node.js 26.
+- Move the supported runtime to Node.js 24.
 - Replace Jest, tsx, ESLint, and Prettier with the Node.js test runner, native TypeScript execution, and Biome.
 - Update the CI workflow to current GitHub Actions with read-only permissions.
 - Replace utility packages with Node.js standard-library and language features.
diff --git a/README.md b/README.md
index bfdaeea..e93199a 100644
--- a/README.md
+++ b/README.md
@@ -83,7 +83,7 @@ The tenants and their configuration be found in [src/data/user/tenants.ts](/src/
 
 ### Prerequisites
 
-Install [Node.js](https://nodejs.org/en/) v26 or newer.
+Install [Node.js](https://nodejs.org/en/) v24.
 
 ### Run the app
 
diff --git a/package-lock.json b/package-lock.json
index c8625c5..764b83c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,13 +17,13 @@
       "devDependencies": {
         "@biomejs/biome": "^2.5.13",
         "@open-resource-discovery/specification": "^1.16.3",
-        "@tsconfig/node26": "^26.0.1",
-        "@types/node": "^26.5.1",
+        "@tsconfig/node24": "^24.0.5",
+        "@types/node": "^24.13.4",
         "openapi-types": "^12.1.3",
         "typescript": "^7.0.2"
       },
       "engines": {
-        "node": ">=26.0.0",
+        "node": "24.x",
         "npm": ">=11.0.0"
       }
     },
@@ -485,21 +485,21 @@
       "integrity": "sha512-k2ENnmBugE/rzQfEcdWHcCY+/FM3VLzH9cYEsbdsoqrvzAKRhUZeRNhAZvB8OitQJ1TBed3yqWtdjzS6wJKBwg==",
       "license": "MIT"
     },
-    "node_modules/@tsconfig/node26": {
-      "version": "26.0.1",
-      "resolved": "https://registry.npmjs.org/@tsconfig/node26/-/node26-26.0.1.tgz",
-      "integrity": "sha512-NQT8JUFDKeAIWpR1dakeF534msQAsoSLr1WpKdRDt3sCvk2fsFK3EVKUBG5xKYVamiRO6yTfniiyvCaqOGgn/g==",
+    "node_modules/@tsconfig/node24": {
+      "version": "24.0.5",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node24/-/node24-24.0.5.tgz",
+      "integrity": "sha512-DWC54fGPuhZgg3Ighg4Y/A/bA3ZdB5hnzAuv/MkQ/X85sVsBsMQxu8t7khutdYeiNksBbFdDyeqv1HSW2Zl8aA==",
       "dev": true,
       "license": "MIT"
     },
     "node_modules/@types/node": {
-      "version": "26.5.1",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-26.5.1.tgz",
-      "integrity": "sha512-CzNm2FezW4VR/LjG6yUdiEgLE/rAQ9Slj5gCu/C2VrdcW7I0ahNZ8DRbHT7zOZ6r3ONgd/bsQIeSaoDGrd1C6g==",
+      "version": "24.13.4",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-24.13.4.tgz",
+      "integrity": "sha512-YJ7EqCstVTzIr0fMr7qul/977en+pQHrfmuKIo6Zr9i75Be21dr3MovcfvGtyvi2HAUrRerWps5sMO9I7WaxDw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "undici-types": "~8.9.0"
+        "undici-types": "~7.18.0"
       }
     },
     "node_modules/@typescript/typescript-aix-ppc64": {
@@ -1724,9 +1724,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "8.9.0",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-8.9.0.tgz",
-      "integrity": "sha512-KTDyRTYX8sWmKXAikPHHSyc63CRPETMctyjKFupcC6OBLXT3xsN0e9aF7m+mIXutFWpUXuedtowG7iLOzp0kQg==",
+      "version": "7.18.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
+      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
       "dev": true,
       "license": "MIT"
     },
diff --git a/package.json b/package.json
index 38e50a6..c3f2423 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "type": "module",
   "private": true,
   "engines": {
-    "node": ">=26.0.0",
+    "node": "24.x",
     "npm": ">=11.0.0"
   },
   "scripts": {
@@ -36,8 +36,8 @@
   "devDependencies": {
     "@biomejs/biome": "^2.5.13",
     "@open-resource-discovery/specification": "^1.16.3",
-    "@tsconfig/node26": "^26.0.1",
-    "@types/node": "^26.5.1",
+    "@tsconfig/node24": "^24.0.5",
+    "@types/node": "^24.13.4",
     "openapi-types": "^12.1.3",
     "typescript": "^7.0.2"
   }
diff --git a/tsconfig.json b/tsconfig.json
index 44a73be..89f704e 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,5 +1,5 @@
 {
-  "extends": "@tsconfig/node26/tsconfig.json",
+  "extends": "@tsconfig/node24/tsconfig.json",
   "compilerOptions": {
     "module": "nodenext",
     "moduleResolution": "NodeNext",