diff --git a/modules/.submodules.json b/modules/.submodules.json
index deeee91e247..8afcd877606 100644
--- a/modules/.submodules.json
+++ b/modules/.submodules.json
@@ -7,7 +7,7 @@
       "amxIdSystem",
       "britepoolIdSystem",
       "connectIdSystem",
-      "cpexIdSystem",
+      "czechAdIdSystem",
       "criteoIdSystem",
       "dacIdSystem",
       "deepintentDpesIdSystem",
diff --git a/modules/cpexIdSystem.md b/modules/cpexIdSystem.md
deleted file mode 100644
index 8aceb7fe4ec..00000000000
--- a/modules/cpexIdSystem.md
+++ /dev/null
@@ -1,27 +0,0 @@
-## CPEx User ID Submodule
-
-CPExID is provided by [Czech Publisher Exchange](https://www.cpex.cz/), or CPEx. It is a user ID for ad targeting by using first party cookie, or localStorage mechanism. Please contact CPEx before using this ID.
-
-## Building Prebid with CPExID Support
-
-First, make sure to add the cpexId to your Prebid.js package with:
-
-```
-gulp build --modules=cpexIdSystem
-```
-
-The following configuration parameters are available:
-
-```javascript
-pbjs.setConfig({
-    userSync: {
-        userIds: [{
-            name: 'cpexId'
-        }]
-    }
-});
-```
-
-| Param under userSync.userIds[] | Scope | Type | Description | Example |
-| --- | --- | --- | --- | --- |
-| name | Required | String | The name of this module. | `"cpexId"` |
diff --git a/modules/cpexIdSystem.js b/modules/czechAdIdSystem.js
similarity index 82%
rename from modules/cpexIdSystem.js
rename to modules/czechAdIdSystem.js
index 5c2e6bc212d..7354ed2e483 100644
--- a/modules/cpexIdSystem.js
+++ b/modules/czechAdIdSystem.js
@@ -1,7 +1,7 @@
 /**
  * This module adds 'caid' to the User ID module
  * The {@link module:modules/userId} module is required
- * @module modules/cpexIdSystem
+ * @module modules/czechAdIdSystem
  * @requires module:modules/userId
  */
 
@@ -9,19 +9,19 @@ import { submodule } from '../src/hook.js'
 import { getStorageManager } from '../src/storageManager.js'
 
 // Returns StorageManager
-export const storage = getStorageManager({ gvlid: 570, moduleName: 'cpexId' })
+export const storage = getStorageManager({ gvlid: 570, moduleName: 'czechAdId' })
 
 // Returns the id string from either cookie or localstorage
 const readId = () => { return storage.getCookie('czaid') || storage.getDataFromLocalStorage('czaid') }
 
 /** @type {Submodule} */
-export const cpexIdSubmodule = {
-  version: '0.0.5',
+export const czechAdIdSubmodule = {
+  version: '0.1.0',
   /**
    * used to link submodule with config
    * @type {string}
    */
-  name: 'cpexId',
+  name: 'czechAdId',
   /**
    * Vendor ID of Czech Publisher Exchange
    * @type {Number}
@@ -32,7 +32,7 @@ export const cpexIdSubmodule = {
    * @function decode
    * @returns {(Object|undefined)}
    */
-  decode () { return { cpexId: readId() } },
+  decode () { return { czechAdId: readId() } },
   /**
    * performs action to obtain id and return a value in the callback's response argument
    * @function
@@ -44,4 +44,4 @@ export const cpexIdSubmodule = {
   }
 }
 
-submodule('userId', cpexIdSubmodule)
+submodule('userId', czechAdIdSubmodule)
diff --git a/modules/czechAdIdSystem.md b/modules/czechAdIdSystem.md
new file mode 100644
index 00000000000..5614016f524
--- /dev/null
+++ b/modules/czechAdIdSystem.md
@@ -0,0 +1,27 @@
+## CzechAdId User ID Submodule
+
+Czech Ad ID is a joint project of publishers of the [CPEx alliance](https://www.cpex.cz/) and [Seznam.cz](https://www.seznam.cz). It is a deterministic user ID that offers cross-domain and cross-device identification. For more information see [czechadid.cz](https://www.czechadid.cz)).
+
+## Building Prebid with CzechAdId Support
+
+First, make sure to add the czechAdId to your Prebid.js package with:
+
+```
+gulp build --modules=czechAdIdSystem
+```
+
+The following configuration parameters are available:
+
+```javascript
+pbjs.setConfig({
+    userSync: {
+        userIds: [{
+            name: 'czechAdId'
+        }]
+    }
+});
+```
+
+| Param under userSync.userIds[] | Scope | Type | Description | Example |
+| --- | --- | --- | --- | --- |
+| name | Required | String | The name of this module. | `"czechAdId"` |
diff --git a/modules/userId/eids.js b/modules/userId/eids.js
index bae5071e4b2..c41b6f83d6d 100644
--- a/modules/userId/eids.js
+++ b/modules/userId/eids.js
@@ -345,8 +345,8 @@ export const USER_IDS_CONFIG = {
     atype: 1
   },
 
-  // cpexId
-  'cpexId': {
+  // czechAdId
+  'czechAdId': {
     source: 'czechadid.cz',
     atype: 1
   },
diff --git a/modules/userId/userId.md b/modules/userId/userId.md
index f25383af975..5b0145f8a11 100644
--- a/modules/userId/userId.md
+++ b/modules/userId/userId.md
@@ -102,7 +102,7 @@ pbjs.setConfig({
                  expires: 1
               }
         }, {
-            name: "cpexId"
+            name: "czechAdId"
         }, {
             name: 'mwOpenLinkId',
             params: {
diff --git a/test/spec/modules/cpexIdSystem_spec.js b/test/spec/modules/cpexIdSystem_spec.js
index e1320d82a6a..6e004c9f8ca 100644
--- a/test/spec/modules/cpexIdSystem_spec.js
+++ b/test/spec/modules/cpexIdSystem_spec.js
@@ -1,6 +1,6 @@
-import { cpexIdSubmodule, storage } from 'modules/cpexIdSystem.js';
+import { czechAdIdSubmodule, storage } from 'modules/czechAdIdSystem.js';
 
-describe('cpexId module', function () {
+describe('czechAdId module', function () {
   let getCookieStub;
 
   beforeEach(function (done) {
@@ -16,23 +16,23 @@ describe('cpexId module', function () {
 
   describe('getId()', function () {
     it('should return the uid when it exists in cookie', function () {
-      getCookieStub.withArgs('czaid').returns('cpexIdTest');
-      const id = cpexIdSubmodule.getId();
-      expect(id).to.be.deep.equal({ id: 'cpexIdTest' });
+      getCookieStub.withArgs('czaid').returns('czechAdIdTest');
+      const id = czechAdIdSubmodule.getId();
+      expect(id).to.be.deep.equal({ id: 'czechAdIdTest' });
     });
 
     cookieTestCasesForEmpty.forEach(testCase => it('should not return the uid when it doesnt exist in cookie', function () {
       getCookieStub.withArgs('czaid').returns(testCase);
-      const id = cpexIdSubmodule.getId();
+      const id = czechAdIdSubmodule.getId();
       expect(id).to.be.undefined;
     }));
   });
 
   describe('decode()', function () {
     it('should return the uid when it exists in cookie', function () {
-      getCookieStub.withArgs('czaid').returns('cpexIdTest');
-      const decoded = cpexIdSubmodule.decode();
-      expect(decoded).to.be.deep.equal({ cpexId: 'cpexIdTest' });
+      getCookieStub.withArgs('czaid').returns('czechAdIdTest');
+      const decoded = czechAdIdSubmodule.decode();
+      expect(decoded).to.be.deep.equal({ czechAdId: 'czechAdIdTest' });
     });
   });
 });
diff --git a/test/spec/modules/eids_spec.js b/test/spec/modules/eids_spec.js
index 78c8f2b3148..ba3be282ae6 100644
--- a/test/spec/modules/eids_spec.js
+++ b/test/spec/modules/eids_spec.js
@@ -432,9 +432,9 @@ describe('eids array generation for known sub-modules', function() {
     });
   });
 
-  it('cpexId', () => {
+  it('czechAdId', () => {
     const id = 'some-random-id-value'
-    const userId = { cpexId: id };
+    const userId = { czechAdId: id };
     const [eid] = createEidsArray(userId);
     expect(eid).to.deep.equal({
       source: 'czechadid.cz',