diff --git a/package.json b/package.json
index 665154ff31745bbd6e794300857fb7d07bfc322d..6f101515244d6d0578a90a05596d8918bdddbbb9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@epoc/epoc-types",
-  "version": "2.0.0-beta.4",
+  "version": "2.0.0-beta.5",
   "description": "ePoc (Electronic Pocket Open Course) types specifications",
   "main": "dist/index.ts",
   "types": "dist/index.d.ts",
diff --git a/src/v1/content.ts b/src/v1/content.ts
index 88312214656b0d7b97684642576b4fe460454e20..6736e17e62fec0ac19cc7769520034112acb4516 100644
--- a/src/v1/content.ts
+++ b/src/v1/content.ts
@@ -22,7 +22,6 @@ export interface Audio extends Content {
     source: string;
     summary: html;
     transcript: string;
-    poster: string;
 }
 
 export interface Html extends Content {
diff --git a/src/v2/content.ts b/src/v2/content.ts
index bb5bb3335585f34d02e32ed264bb4cd443050998..1db175f543b18cb7054033440389a9b4172abf9c 100644
--- a/src/v2/content.ts
+++ b/src/v2/content.ts
@@ -75,11 +75,6 @@ export interface Audio extends BaseContent {
      * Specifies the text transcript of the audio
      */
     transcript: string;
-
-    /**
-     * Specifies the video poster (thumbnail) uri
-     */
-    poster: uri;
 }
 
 /**