diff --git a/apps/e2e/tests/js/auth-like.test.ts b/apps/e2e/tests/js/auth-like.test.ts
index 453721a02..f8965e983 100644
--- a/apps/e2e/tests/js/auth-like.test.ts
+++ b/apps/e2e/tests/js/auth-like.test.ts
@@ -13,6 +13,22 @@ const signIn = async (clientApp: any) => {
   });
 };
 
+// ============================================
+// version tests
+// ============================================
+
+it("clientApp.version should return a valid semver version string", async ({ expect }) => {
+  const { clientApp } = await createApp({});
+  expect(clientApp.version).toBeDefined();
+  expect(typeof clientApp.version).toBe("string");
+  expect(clientApp.version).toMatch(/^\d+\.\d+\.\d+/);
+});
+
+it("serverApp.version should return the same version as clientApp", async ({ expect }) => {
+  const { clientApp, serverApp } = await createApp({});
+  expect(serverApp.version).toBe(clientApp.version);
+});
+
 // ============================================
 // getAccessToken / getRefreshToken tests
 // ============================================
diff --git a/packages/template/src/lib/stack-app/apps/implementations/client-app-impl.ts b/packages/template/src/lib/stack-app/apps/implementations/client-app-impl.ts
index 238ec9111..2c76f159e 100644
--- a/packages/template/src/lib/stack-app/apps/implementations/client-app-impl.ts
+++ b/packages/template/src/lib/stack-app/apps/implementations/client-app-impl.ts
@@ -1916,6 +1916,10 @@ export class _StackClientAppImplIncomplete<HasTokenStore extends boolean, Projec
     return this._interface.projectId as ProjectId;
   }
 
+  get version(): string {
+    return clientVersion;
+  }
+
   protected async _isTrusted(url: string): Promise<boolean> {
     // TODO: At some point, we should use the project's trusted domains for this instead of just requiring the URL to be relative
     // (note that when we do this, that should be on-top of the relativity check, not replacing it)
diff --git a/packages/template/src/lib/stack-app/apps/interfaces/client-app.ts b/packages/template/src/lib/stack-app/apps/interfaces/client-app.ts
index 79006b412..729b718b9 100644
--- a/packages/template/src/lib/stack-app/apps/interfaces/client-app.ts
+++ b/packages/template/src/lib/stack-app/apps/interfaces/client-app.ts
@@ -47,6 +47,11 @@ export type StackClientApp<HasTokenStore extends boolean = boolean, ProjectId ex
   & {
     readonly projectId: ProjectId,
 
+    /**
+     * The version of the Stack Auth SDK.
+     */
+    readonly version: string,
+
     readonly urls: Readonly<HandlerUrls>,
 
     signInWithOAuth(provider: string, options?: { returnTo?: string }): Promise<void>,