diff --git a/dev-docs/modules/userId.md b/dev-docs/modules/userId.md
index 8a2fd56917..3e183ad0ca 100644
--- a/dev-docs/modules/userId.md
+++ b/dev-docs/modules/userId.md
@@ -197,7 +197,7 @@ Bidders that want to support the User ID module in Prebid.js need to update thei
 | AudienceOne ID | DAC | dacId | dac.co.jp | {"id": "1111"} |
 | DeepIntent ID | Deep Intent | deepintentId | deepintent.com | "1111" |
 | DMD ID | DMD | dmdId | hcn.health | "1111" |
-| CpexID | CPEx | cpexId | cpex.cz | "1111" |
+| Czech Ad ID | czechAdId | czechAdId | czechadid.cz | "1111" |
 | CriteoID | Criteo | criteoId | criteo.com | "1111" |
 | Fabrick ID | Neustar | fabrickId | neustar.biz | "1111" |
 | FLoC ID | n/a | flocId | | |
diff --git a/dev-docs/modules/userid-submodules/cpexid.md b/dev-docs/modules/userid-submodules/cpexid.md
index de5da58642..a0348c9a66 100644
--- a/dev-docs/modules/userid-submodules/cpexid.md
+++ b/dev-docs/modules/userid-submodules/cpexid.md
@@ -1,30 +1,29 @@
 ---
 layout: userid
-title: Czech Publisher Exchange ID (CPExID)
-description: Czech Publisher Exchange ID (CPExID) User ID sub-module
-useridmodule: cpexIdSystem
+title: Czech Ad ID (czechAdId)
+description: Czech Ad ID (czechAdId) User ID sub-module
+useridmodule: czechAdIdSystem
 ---
 
-
-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.
+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)).
 
 {: .alert.alert-info :}
-gulp build --modules=cpexIdSystem
+gulp build --modules=czechAdIdSystem
 
-## CPExId Configuration
+## czechAdId Configuration
 
 {: .table .table-bordered .table-striped }
 | Param under userSync.userIds[] | Scope | Type | Description | Example |
 | --- | --- | --- | --- | --- |
-| name | Required | String | The name of this module | `"cpexId"` |
+| name | Required | String | The name of this module | `"czechAdId"` |
 
-## CPExId Example
+## czechAdId Example
 
 {% highlight javascript %}
 pbjs.setConfig({
     userSync: {
         userIds: [{
-            name: 'cpexId'
+            name: 'czechAdId'
         }]
     }
 });