diff --git a/__tests__/server/middleware/createRequestStore.spec.js b/__tests__/server/middleware/createRequestStore.spec.js
index c04e9e3e..3b19781b 100644
--- a/__tests__/server/middleware/createRequestStore.spec.js
+++ b/__tests__/server/middleware/createRequestStore.spec.js
@@ -35,6 +35,7 @@ jest.mock('holocron', () => {
 holocron.getModuleMap.mockImplementation(() => fromJS({
   modules: {
     'test-root': {
+      baseUrl: 'https://example.com/cdn/test-root/2.2.2/',
       node: {
         url: 'https://example.com/cdn/test-root/2.2.2/test-root.node.js',
         integrity: '4y45hr',
diff --git a/__tests__/server/middleware/sendHtml.spec.js b/__tests__/server/middleware/sendHtml.spec.js
index 1196a420..b048beec 100644
--- a/__tests__/server/middleware/sendHtml.spec.js
+++ b/__tests__/server/middleware/sendHtml.spec.js
@@ -174,6 +174,7 @@ describe('sendHtml', () => {
     setClientModuleMapCache({
       modules: {
         'test-root': {
+          baseUrl: 'https://example.com/cdn/test-root/2.2.2/',
           node: {
             url: 'https://example.com/cdn/test-root/2.2.2/test-root.node.js',
             integrity: '4y45hr',
diff --git a/__tests__/server/utils/addBaseUrlToModuleMap.spec.js b/__tests__/server/utils/addBaseUrlToModuleMap.spec.js
new file mode 100644
index 00000000..00dea67c
--- /dev/null
+++ b/__tests__/server/utils/addBaseUrlToModuleMap.spec.js
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2019 American Express Travel Related Services Company, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+import addBaseUrlToModuleMap from '../../../src/server/utils/addBaseUrlToModuleMap';
+
+const moduleMap = {
+  modules: {
+    'module-a': {
+      node: {
+        url: 'https://example.com/cdn/module-a/1.0.0/module-a.node.js',
+        integrity: '234',
+      },
+      browser: {
+        url: 'https://example.com/cdn/module-a/1.0.0/module-a.browser.js',
+        integrity: '353',
+      },
+      legacyBrowser: {
+        url: 'https://example.com/cdn/module-a/1.0.0/module-a.legacy.browser.js',
+        integrity: '0087',
+      },
+    },
+    'module-b': {
+      node: {
+        url: 'https://example.com/cdn/module-b/1.0.0/module-b.node.js',
+        integrity: '0322380',
+      },
+      browser: {
+        url: 'https://example.com/cdn/module-b/1.0.0/module-b.browser.js',
+        integrity: 'sd3o23098',
+      },
+      legacyBrowser: {
+        url: 'https://example.com/cdn/module-b/1.0.0/module-b.legacy.browser.js',
+        integrity: 'flj23032',
+      },
+    },
+  },
+};
+
+describe('addBaseUrlToModuleMap', () => {
+  it('creates a "baseUrl" entry for each module and returns a module map including the new key', () => {
+    const updatedModuleMap = addBaseUrlToModuleMap(moduleMap);
+    Object.keys(updatedModuleMap.modules).forEach((moduleName) => {
+      const module = updatedModuleMap.modules[moduleName];
+      expect(module.baseUrl).toBe(`https://example.com/cdn/${moduleName}/1.0.0/`);
+    });
+  });
+});
diff --git a/__tests__/server/utils/clientModuleMapCache.spec.js b/__tests__/server/utils/clientModuleMapCache.spec.js
index 1ff0a5cf..f34d5b89 100644
--- a/__tests__/server/utils/clientModuleMapCache.spec.js
+++ b/__tests__/server/utils/clientModuleMapCache.spec.js
@@ -62,16 +62,6 @@ describe('clientModuleMapCache', () => {
     expect(Object.keys(moduleMapCache)).toEqual(cacheKeys);
   });
 
-  it('creates a "baseUrl" entry for each module and returns a module map including the addition', () => {
-    // conflicting eslint rules here
-    // eslint-disable-next-line max-len
-    cacheKeys.forEach((cacheKey) => Object.keys(moduleMapCache[cacheKey].modules).forEach((moduleName) => {
-      const module = moduleMapCache[cacheKey].modules[moduleName];
-      expect(module.baseUrl).toBe(`https://example.com/cdn/${moduleName}/1.0.0/`);
-    })
-    );
-  });
-
   it('only includes values for a single bundle per module in each map', () => {
     // conflicting eslint rules here
     // eslint-disable-next-line max-len
diff --git a/__tests__/server/utils/loadModules.spec.jsx b/__tests__/server/utils/loadModules.spec.jsx
index 9e2dfeed..2372fa1a 100644
--- a/__tests__/server/utils/loadModules.spec.jsx
+++ b/__tests__/server/utils/loadModules.spec.jsx
@@ -20,6 +20,7 @@ import { CONFIGURATION_KEY } from '../../../src/server/utils/onModuleLoad';
 import loadModules from '../../../src/server/utils/loadModules';
 import { updateCSP } from '../../../src/server/middleware/csp';
 import { setClientModuleMapCache, getClientModuleMapCache } from '../../../src/server/utils/clientModuleMapCache';
+import addBaseUrlToModuleMap from '../../../src/server/utils/addBaseUrlToModuleMap';
 
 // This named export exists only on the mock
 // eslint-disable-next-line import/named
@@ -95,7 +96,7 @@ describe('loadModules', () => {
   it('updates the holocron module registry', async () => {
     await loadModules();
     expect(updateModuleRegistry).toHaveBeenCalledWith({
-      moduleMap,
+      moduleMap: addBaseUrlToModuleMap(moduleMap),
       batchModulesToUpdate: require('../../../src/server/utils/batchModulesToUpdate').default,
       getModulesToUpdate: require('../../../src/server/utils/getModulesToUpdate').default,
       onModuleLoad: require('../../../src/server/utils/onModuleLoad').default,
diff --git a/prod-sample/sample-modules/needy-frank/0.0.0/package-lock.json b/prod-sample/sample-modules/needy-frank/0.0.0/package-lock.json
index 14b7c64b..cd5154a1 100644
--- a/prod-sample/sample-modules/needy-frank/0.0.0/package-lock.json
+++ b/prod-sample/sample-modules/needy-frank/0.0.0/package-lock.json
@@ -7444,4 +7444,4 @@
       }
     }
   }
-}
+}
\ No newline at end of file
diff --git a/src/server/utils/addBaseUrlToModuleMap.js b/src/server/utils/addBaseUrlToModuleMap.js
new file mode 100644
index 00000000..9c0c31c8
--- /dev/null
+++ b/src/server/utils/addBaseUrlToModuleMap.js
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2020 American Express Travel Related Services Company, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+/* The baseUrl key in the module map is used by one-app-ducks to construct
+the language pack URL pointing at the location of the language pack */
+const addBaseUrlToModuleMap = (moduleMap) => ({
+  ...moduleMap,
+  modules: Object.entries(moduleMap.modules).reduce((acc, [moduleName, moduleBundles]) => (
+    {
+      ...acc,
+      [moduleName]: {
+        ...moduleBundles,
+        baseUrl: moduleBundles.node.url.replace(/[^/]+\.js$/i, ''),
+      },
+    }
+  ), {}),
+});
+
+export default addBaseUrlToModuleMap;
diff --git a/src/server/utils/clientModuleMapCache.js b/src/server/utils/clientModuleMapCache.js
index 34864ed5..bfe5c39c 100644
--- a/src/server/utils/clientModuleMapCache.js
+++ b/src/server/utils/clientModuleMapCache.js
@@ -16,6 +16,8 @@
 
 let cache = {};
 
+/* Filters bundle types so only the required client moduleBundleType is returned
+in ../server/middleware/sendHtml.js and reducing the html payload size */
 function filterBundles(moduleMap, moduleBundleType) {
   return {
     ...moduleMap,
@@ -23,7 +25,7 @@ function filterBundles(moduleMap, moduleBundleType) {
       {
         ...acc,
         [moduleName]: {
-          baseUrl: moduleBundles[moduleBundleType].url.replace(/[^/]+\.js$/i, ''),
+          baseUrl: moduleBundles.baseUrl,
           [moduleBundleType]: moduleBundles[moduleBundleType],
         },
       }
diff --git a/src/server/utils/loadModules.js b/src/server/utils/loadModules.js
index bbac354c..6362008d 100644
--- a/src/server/utils/loadModules.js
+++ b/src/server/utils/loadModules.js
@@ -23,10 +23,11 @@ import getModulesToUpdate from './getModulesToUpdate';
 import { getServerStateConfig } from './stateConfig';
 import { setClientModuleMapCache } from './clientModuleMapCache';
 import { updateCSP } from '../middleware/csp';
+import addBaseUrlToModuleMap from './addBaseUrlToModuleMap';
 
 const loadModules = async () => {
   const moduleMapResponse = await fetch(process.env.HOLOCRON_MODULE_MAP_URL);
-  const moduleMap = await moduleMapResponse.json();
+  const moduleMap = addBaseUrlToModuleMap(await moduleMapResponse.json());
   const serverConfig = getServerStateConfig();
 
   const loadedModules = await updateModuleRegistry({