diff --git a/.github/workflows/lint-build-test.yml b/.github/workflows/lint-build-test.yml
index 1d04e0a..845a1ed 100644
--- a/.github/workflows/lint-build-test.yml
+++ b/.github/workflows/lint-build-test.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
@@ -25,7 +25,7 @@ jobs:
     needs: prepare
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
@@ -49,7 +49,7 @@ jobs:
     needs: prepare
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
@@ -73,7 +73,7 @@ jobs:
     needs: prepare
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
@@ -97,7 +97,7 @@ jobs:
     needs: prepare
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [20.x]
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
diff --git a/.nvmrc b/.nvmrc
index 0828ab7..9a2a0e2 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-v18
\ No newline at end of file
+v20
diff --git a/README.md b/README.md
index a29cba5..fd119b4 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Follow these steps to run the full end-to-end demo on your machine.
 
 ### Prerequisites
 
-- **Node.js**: Use version 18.x or later.
+- **Node.js**: Use version 20.x or later.
 - **Yarn**: This repository uses Yarn for package management.
 - **Docker & Docker Compose**: Required to run the backend relay server.
 - **Expo Go App**: To run the mobile wallet demo, you'll need the [Expo Go](https://expo.dev/go) app on your iOS or Android device.
diff --git a/package.json b/package.json
index 56567d5..c86555f 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,9 @@
 		"typescript": "^5.8.3",
 		"vitest": "^3.2.4"
 	},
+	"engines": {
+		"node": ">=20"
+	},
 	"packageManager": "yarn@4.2.2",
 	"lavamoat": {
 		"allowScripts": {
diff --git a/packages/core/package.json b/packages/core/package.json
index 6cfe023..c446388 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -20,6 +20,9 @@
 		"changelog:update": "../../scripts/update-changelog.sh @metamask/mobile-wallet-protocol-core",
 		"changelog:validate": "../../scripts/validate-changelog.sh @metamask/mobile-wallet-protocol-core"
 	},
+	"engines": {
+		"node": ">=20"
+	},
 	"publishConfig": {
 		"access": "public",
 		"registry": "https://registry.npmjs.org/"
diff --git a/packages/dapp-client/package.json b/packages/dapp-client/package.json
index 4e65448..221243c 100644
--- a/packages/dapp-client/package.json
+++ b/packages/dapp-client/package.json
@@ -33,6 +33,9 @@
 		"changelog:update": "../../scripts/update-changelog.sh @metamask/mobile-wallet-protocol-dapp-client",
 		"changelog:validate": "../../scripts/validate-changelog.sh @metamask/mobile-wallet-protocol-dapp-client"
 	},
+	"engines": {
+		"node": ">=20"
+	},
 	"publishConfig": {
 		"access": "public",
 		"registry": "https://registry.npmjs.org/"
diff --git a/packages/wallet-client/package.json b/packages/wallet-client/package.json
index aac5ec7..65e252a 100644
--- a/packages/wallet-client/package.json
+++ b/packages/wallet-client/package.json
@@ -33,6 +33,9 @@
 		"changelog:update": "../../scripts/update-changelog.sh @metamask/mobile-wallet-protocol-wallet-client",
 		"changelog:validate": "../../scripts/validate-changelog.sh @metamask/mobile-wallet-protocol-wallet-client"
 	},
+	"engines": {
+		"node": ">=20"
+	},
 	"publishConfig": {
 		"access": "public",
 		"registry": "https://registry.npmjs.org/"