diff --git a/extension/src/wasm.d.ts b/extension/src/wasm.d.ts
index 0ea4504..b6d7064 100644
--- a/extension/src/wasm.d.ts
+++ b/extension/src/wasm.d.ts
@@ -14,6 +14,7 @@ declare module 'idfoto-wasm' {
   export function encrypt(plaintext: Uint8Array, key: Uint8Array): Uint8Array;
   export function decrypt(ciphertext: Uint8Array, key: Uint8Array): Uint8Array;
   export function extract_image_secret(jpeg_bytes: Uint8Array): Uint8Array;
+  export function embed_image_secret(carrier_jpeg: Uint8Array, secret: Uint8Array): Uint8Array;
   export function encrypt_entry(entry_json: string, key: Uint8Array): Uint8Array;
   export function decrypt_entry(ciphertext: Uint8Array, key: Uint8Array): string;
   export function encrypt_manifest(manifest_json: string, key: Uint8Array): Uint8Array;