diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f099d078..01a23ca3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,8 +9,8 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - run: npm ci
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 6575f1c6..90e5d004 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -9,8 +9,8 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - run: npm ci
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index cd51cfbf..b6c4f27e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,11 +19,11 @@ jobs:
       issues: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - name: Install dependencies
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7408436a..ca91d786 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,8 +12,8 @@ jobs:
       matrix:
         env: ['node', 'jsdom']
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
       - run: npm ci
diff --git a/.node-version b/.node-version
index e6db45a9..a9d08739 100644
--- a/.node-version
+++ b/.node-version
@@ -1 +1 @@
-18.14.0
+18.19.0
diff --git a/.nvmrc b/.nvmrc
index e6db45a9..a9d08739 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-18.14.0
+18.19.0
diff --git a/package-lock.json b/package-lock.json
index a44231d2..7b8e34de 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,7 +30,7 @@
         "@types/callback-to-async-iterator": "^1.1.4",
         "@types/elliptic": "^6.4.14",
         "@types/jest": "^28.1.3",
-        "@types/node": "^18.14.0",
+        "@types/node": "^18.19.0",
         "@typescript-eslint/eslint-plugin": "^6.7.2",
         "@typescript-eslint/parser": "^6.7.2",
         "@xmtp/rollup-plugin-resolve-extensions": "^1.0.0",
@@ -5234,9 +5234,12 @@
       "dev": true
     },
     "node_modules/@types/node": {
-      "version": "18.15.11",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.15.11.tgz",
-      "integrity": "sha512-E5Kwq2n4SbMzQOn6wnmBjuK9ouqlURrcZDVfbo9ftDDTFt3nk7ZKK4GMOzoYgnpQJKcxwQw+lGaBvvlMo0qN/Q=="
+      "version": "18.19.15",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.19.15.tgz",
+      "integrity": "sha512-AMZ2UWx+woHNfM11PyAEQmfSxi05jm9OlkxczuHeEqmvwPkYj6MWv44gbzDPefYOLysTOFyI3ziiy2ONmUZfpA==",
+      "dependencies": {
+        "undici-types": "~5.26.4"
+      }
     },
     "node_modules/@types/normalize-package-data": {
       "version": "2.4.1",
@@ -20794,6 +20797,11 @@
         "node": ">=14.0"
       }
     },
+    "node_modules/undici-types": {
+      "version": "5.26.5",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz",
+      "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA=="
+    },
     "node_modules/unicorn-magic": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/unicorn-magic/-/unicorn-magic-0.1.0.tgz",
diff --git a/package.json b/package.json
index 2855fa8a..e9b39918 100644
--- a/package.json
+++ b/package.json
@@ -124,7 +124,7 @@
     "@types/callback-to-async-iterator": "^1.1.4",
     "@types/elliptic": "^6.4.14",
     "@types/jest": "^28.1.3",
-    "@types/node": "^18.14.0",
+    "@types/node": "^18.19.0",
     "@typescript-eslint/eslint-plugin": "^6.7.2",
     "@typescript-eslint/parser": "^6.7.2",
     "@xmtp/rollup-plugin-resolve-extensions": "^1.0.0",
diff --git a/src/crypto/encryption.ts b/src/crypto/encryption.ts
index 0e9460ac..8398cd8f 100644
--- a/src/crypto/encryption.ts
+++ b/src/crypto/encryption.ts
@@ -2,7 +2,7 @@ import { ciphertext } from '@xmtp/proto'
 import Ciphertext, { AESGCMNonceSize, KDFSaltSize } from './Ciphertext'
 import crypto from './crypto'
 
-const hkdfNoInfo = new ArrayBuffer(0)
+const hkdfNoInfo = new Uint8Array().buffer
 
 // This is a variation of https://github.com/paulmillr/noble-secp256k1/blob/main/index.ts#L1378-L1388
 // that uses `digest('SHA-256', bytes)` instead of `digest('SHA-256', bytes.buffer)`
diff --git a/test/Client.test.ts b/test/Client.test.ts
index ae4eab11..a270727a 100644
--- a/test/Client.test.ts
+++ b/test/Client.test.ts
@@ -190,10 +190,10 @@ describe('encodeContent', () => {
     const compressed = Uint8Array.from([
       10, 18, 10, 8, 120, 109, 116, 112, 46, 111, 114, 103, 18, 4, 116, 101,
       120, 116, 24, 1, 18, 17, 10, 8, 101, 110, 99, 111, 100, 105, 110, 103, 18,
-      5, 85, 84, 70, 45, 56, 40, 0, 34, 45, 120, 156, 51, 52, 48, 209, 49, 52,
-      48, 4, 98, 11, 8, 54, 52, 212, 49, 54, 2, 82, 150, 96, 166, 161, 161, 9,
-      84, 202, 0, 44, 60, 170, 122, 84, 245, 168, 106, 218, 171, 6, 0, 139, 43,
-      173, 229,
+      5, 85, 84, 70, 45, 56, 40, 0, 34, 48, 120, 156, 51, 52, 48, 209, 49, 52,
+      48, 212, 49, 52, 176, 128, 96, 67, 67, 29, 99, 35, 29, 67, 67, 75, 48,
+      211, 208, 208, 4, 42, 101, 0, 22, 30, 85, 61, 170, 122, 84, 53, 237, 85,
+      3, 0, 139, 43, 173, 229,
     ])
 
     const payload = await c.encodeContent(uncompressed, {