diff --git a/extensions/vscode-api-tests/src/singlefolder-tests/workspace.test.ts b/extensions/vscode-api-tests/src/singlefolder-tests/workspace.test.ts
index 126d37524c9..57762b4d1b1 100644
--- a/extensions/vscode-api-tests/src/singlefolder-tests/workspace.test.ts
+++ b/extensions/vscode-api-tests/src/singlefolder-tests/workspace.test.ts
@@ -1177,7 +1177,7 @@ suite('vscode API - workspace', () => {
 		const data = Buffer.from('Hello Binary Files');
 
 		const ws = new vscode.WorkspaceEdit();
-		ws.createFile(fileUri, <any>{ contents: data, ignoreIfExists: false, overwrite: false });
+		ws.createFile(fileUri, { contents: data, ignoreIfExists: false, overwrite: false });
 
 		const success = await vscode.workspace.applyEdit(ws);
 		assert.ok(success);
diff --git a/src/vscode-dts/vscode.d.ts b/src/vscode-dts/vscode.d.ts
index 2c90006429d..20ac638f80e 100644
--- a/src/vscode-dts/vscode.d.ts
+++ b/src/vscode-dts/vscode.d.ts
@@ -3589,14 +3589,15 @@ declare module 'vscode' {
 		/**
 		 * Create a regular file.
 		 *
-		 * @param uri Uri of the new file..
+		 * @param uri Uri of the new file.
 		 * @param options Defines if an existing file should be overwritten or be
-		 * ignored. When overwrite and ignoreIfExists are both set overwrite wins.
+		 * ignored. When `overwrite` and `ignoreIfExists` are both set `overwrite` wins.
 		 * When both are unset and when the file already exists then the edit cannot
-		 * be applied successfully.
+		 * be applied successfully. The `content`-property allows to set the initial contents
+		 * the file is being created with.
 		 * @param metadata Optional metadata for the entry.
 		 */
-		createFile(uri: Uri, options?: { overwrite?: boolean; ignoreIfExists?: boolean }, metadata?: WorkspaceEditEntryMetadata): void;
+		createFile(uri: Uri, options?: { overwrite?: boolean; ignoreIfExists?: boolean; contents?: Uint8Array }, metadata?: WorkspaceEditEntryMetadata): void;
 
 		/**
 		 * Delete a file or folder.