diff --git a/landing/package.json b/landing/package.json
--- a/landing/package.json
+++ b/landing/package.json
@@ -59,7 +59,6 @@
     "react-router": "^5.2.0",
     "react-router-dom": "^5.2.0",
     "react-text-loop": "^2.3.0",
-    "siwe": "^1.1.6",
     "wagmi": "^0.6.0"
   }
 }
diff --git a/landing/siwe.react.js b/landing/siwe.react.js
--- a/landing/siwe.react.js
+++ b/landing/siwe.react.js
@@ -11,7 +11,6 @@
 import invariant from 'invariant';
 import _merge from 'lodash/fp/merge';
 import * as React from 'react';
-import { SiweMessage } from 'siwe';
 import '@rainbow-me/rainbowkit/dist/index.css';
 import {
   useAccount,
@@ -29,6 +28,7 @@
   getSIWEStatementForPublicKey,
   siweStatementWithoutPublicKey,
   siweMessageSigningExplanationStatements,
+  createSIWEMessage,
 } from 'lib/utils/siwe-utils.js';
 
 import { SIWEContext } from './siwe-context.js';
@@ -54,22 +54,6 @@
   provider,
 });
 
-function createSiweMessage(address: string, statement: string, nonce: string) {
-  invariant(nonce, 'nonce must be present in createSiweMessage');
-  const domain = window.location.host;
-  const origin = window.location.origin;
-  const message = new SiweMessage({
-    domain,
-    address,
-    statement,
-    uri: origin,
-    version: '1',
-    chainId: '1',
-    nonce,
-  });
-  return message.prepareMessage();
-}
-
 function postMessageToNativeWebView(message: SIWEWebViewMessage) {
   window.ReactNativeWebView?.postMessage?.(JSON.stringify(message));
 }
@@ -81,7 +65,7 @@
   statement: string,
 ) {
   invariant(nonce, 'nonce must be present in signInWithEthereum');
-  const message = createSiweMessage(address, statement, nonce);
+  const message = createSIWEMessage(address, statement, nonce);
   const signature = await signer.signMessage(message);
   postMessageToNativeWebView({
     type: 'siwe_success',
diff --git a/lib/package.json b/lib/package.json
--- a/lib/package.json
+++ b/lib/package.json
@@ -41,6 +41,7 @@
     "simple-markdown": "^0.7.2",
     "string-hash": "^1.1.3",
     "tcomb": "^3.2.29",
+    "siwe": "^1.1.6",
     "tinycolor2": "^1.4.1",
     "tokenize-text": "^1.1.3",
     "url-parse-lax": "^3.0.0",
diff --git a/lib/utils/siwe-utils.js b/lib/utils/siwe-utils.js
--- a/lib/utils/siwe-utils.js
+++ b/lib/utils/siwe-utils.js
@@ -1,6 +1,7 @@
 // @flow
 
 import invariant from 'invariant';
+import { SiweMessage } from 'siwe';
 
 import type { SIWEMessage } from '../types/siwe-types.js';
 import { isDev } from './dev-utils.js';
@@ -23,9 +24,28 @@
 const siweStatementWithoutPublicKey: string =
   'By continuing, I accept the Comm Terms of Service: https://comm.app/terms';
 
+function createSIWEMessage(
+  address: string,
+  statement: string,
+  nonce: string,
+): string {
+  invariant(nonce, 'nonce must be present in createSiweMessage');
+  const domain = window.location.host;
+  const origin = window.location.origin;
+  const message = new SiweMessage({
+    domain,
+    address,
+    statement,
+    uri: origin,
+    version: '1',
+    chainId: '1',
+    nonce,
+  });
+  return message.prepareMessage();
+}
+
 const expectedDomain = isDev ? 'localhost:3000' : 'comm.app';
 const expectedURI = isDev ? 'http://localhost:3000' : 'https://comm.app';
-
 // Verify that the SIWEMessage is a well formed Comm SIWE Auth message.
 function isValidSIWEMessage(candidate: SIWEMessage): boolean {
   return (
@@ -85,6 +105,7 @@
   isValidSIWENonce,
   isValidEthereumAddress,
   isValidPrimaryIdentityPublicKey,
+  createSIWEMessage,
   isValidSIWEMessage,
   getSIWEStatementForPublicKey,
   isValidSIWEStatementWithPublicKey,