diff --git a/README.md b/README.md
index f2866aa3..ed17775e 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Framework to create External adapters, microservices that serve as middleware to
 
 ## Requirements
 
-- Node.js 22+
+- Node.js 22.12+
 - Yarn
 
 ### Optional development tools
diff --git a/package.json b/package.json
index 96aa47a7..c5a3cda2 100644
--- a/package.json
+++ b/package.json
@@ -5,11 +5,14 @@
   "license": "MIT",
   "repository": "git://github.com/smartcontractkit/ea-framework-js.git",
   "packageManager": "yarn@1.22.22",
+  "engines": {
+    "node": ">=22.12.0"
+  },
   "dependencies": {
     "@date-fns/tz": "1.5.0",
     "ajv": "8.20.0",
     "axios": "1.21.0",
-    "eventsource": "4.1.1",
+    "eventsource": "5.1.4",
     "fastify": "5.12.7",
     "ioredis": "5.11.1",
     "mock-socket": "9.3.1",
diff --git a/scripts/generator-adapter/generators/app/templates/jest.config.js b/scripts/generator-adapter/generators/app/templates/jest.config.js
index 69b8d0f0..fe89146e 100644
--- a/scripts/generator-adapter/generators/app/templates/jest.config.js
+++ b/scripts/generator-adapter/generators/app/templates/jest.config.js
@@ -1,6 +1,7 @@
 module.exports = {
   modulePathIgnorePatterns: ['./dist'],
-  // `cookie` v2 (pulled in by fastify -> light-my-request) is ESM-only. Jest's module loader
-  // can't `require()` ESM, so let babel-jest transform that package to CommonJS.
-  transformIgnorePatterns: ['/node_modules/(?!cookie/)'],
+  // Jest's module loader can't `require()` ESM. Packages listed in the negative lookahead below
+  // ship ESM-only (or ESM-first) builds, so they are excluded from the ignore list and transformed
+  // to CommonJS by babel-jest.
+  transformIgnorePatterns: ['/node_modules/(?!(cookie|eventsource|eventsource-parser)/)'],
 }
diff --git a/yarn.lock b/yarn.lock
index 0889a80e..95d666b6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1931,17 +1931,17 @@ ethers@6.17.0:
     tslib "2.7.0"
     ws "8.21.0"
 
-eventsource-parser@^3.0.1:
-  version "3.0.8"
-  resolved "https://registry.yarnpkg.com/eventsource-parser/-/eventsource-parser-3.0.8.tgz"
-  integrity sha512-70QWGkr4snxr0OXLRWsFLeRBIRPuQOvt4s8QYjmUlmlkyTZkRqS7EDVRZtzU3TiyDbXSzaOeF0XUKy8PchzukQ==
+eventsource-parser@^4.1.2:
+  version "4.1.3"
+  resolved "https://registry.npmjs.org/eventsource-parser/-/eventsource-parser-4.1.3.tgz#365be753e773294b363516f01b2e26a12b834ec7"
+  integrity sha512-jZVIVilXZfAx6H20ZKKEj5dabbpD9ETmMj3uHsjMmgBzBHB6tsHrmdWB4mAiy3amtN6MOoVkfXRQu4wf1n88Rw==
 
-eventsource@4.1.1:
-  version "4.1.1"
-  resolved "https://registry.npmjs.org/eventsource/-/eventsource-4.1.1.tgz#89ad4c69cdd26e19ebb8fb1d79608fccac4bf67b"
-  integrity sha512-D6bTRWh6KahHTK/m4WnjPQyEinNPf9eFLEZSEoj7d6fTibspnAVYfzHvirL7u/aoX5d9YYfIkBVAhmigUELk9w==
+eventsource@5.1.4:
+  version "5.1.4"
+  resolved "https://registry.npmjs.org/eventsource/-/eventsource-5.1.4.tgz#9a0d9790a9be28951fa95d9da5b7c843692e24d5"
+  integrity sha512-awkjURTcaMUKjtEqM/78nMtFSfGcgGST6EbXGV2/E7LJXzWwnNaByn1zACiX9VluWzokVeHpjRdzo3nZr9zhMg==
   dependencies:
-    eventsource-parser "^3.0.1"
+    eventsource-parser "^4.1.2"
 
 execa@^9.6.1:
   version "9.6.1"