diff --git a/types/argon2-browser/argon2-browser-tests.ts b/types/argon2-browser/argon2-browser-tests.ts
index 47d0ddc1b8..6b32059e31 100644
--- a/types/argon2-browser/argon2-browser-tests.ts
+++ b/types/argon2-browser/argon2-browser-tests.ts
@@ -24,4 +24,6 @@ const verifyOptions = {
   (await argon2.hash({ ...mandatoryOptions, type: argon2.ArgonType.Argon2i })).encoded; // string
 
   await argon2.verify(verifyOptions); // undefined
+
+  argon2.unloadRuntime(); // void
 })();
diff --git a/types/argon2-browser/index.d.ts b/types/argon2-browser/index.d.ts
index f78b44e3ff..3f1d27183a 100644
--- a/types/argon2-browser/index.d.ts
+++ b/types/argon2-browser/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for argon2-browser 1.6
+// Type definitions for argon2-browser 1.12
 // Project: https://github.com/antelle/argon2-browser#readme
 // Definitions by: Ivan Gabriele <https://github.com/ivangabriele>
 //                 Brendan Early <https://github.com/mymindstorm>
@@ -12,6 +12,8 @@ export function hash(
   options: Argon2BrowserHashOptions,
 ): Promise<Argon2BrowserHashResult>;
 
+export function unloadRuntime(): void;
+
 interface Argon2BrowserHashOptions {
   pass: string | Uint8Array;
   salt: string | Uint8Array;