diff --git a/src/auth.ts b/src/auth.ts
index f24205db3..c9180ab12 100644
--- a/src/auth.ts
+++ b/src/auth.ts
@@ -1,14 +1,10 @@
-import {
-  AuthOptions,
-  StrategyOptionsWithDefaults,
-  Authentication,
-} from "./types";
+import { AuthOptions, Authentication, State } from "./types";
 import { getAppAuthentication } from "./get-app-authentication";
 import { getInstallationAuthentication } from "./get-installation-authentication";
 import { getOAuthAuthentication } from "./get-oauth-authentication";
 
 export async function auth(
-  state: StrategyOptionsWithDefaults,
+  state: State,
   options: AuthOptions
 ): Promise<Authentication> {
   if (options.type === "app") {
diff --git a/src/get-installation-authentication.ts b/src/get-installation-authentication.ts
index 3b187caa9..f56d6b51b 100644
--- a/src/get-installation-authentication.ts
+++ b/src/get-installation-authentication.ts
@@ -2,14 +2,14 @@ import { get, set } from "./cache";
 import { getAppAuthentication } from "./get-app-authentication";
 import { toTokenAuthentication } from "./to-token-authentication";
 import {
-  RequestInterface,
   InstallationAuthOptions,
-  StrategyOptionsWithDefaults,
   InstallationAccessTokenAuthentication,
+  RequestInterface,
+  State,
 } from "./types";
 
 export async function getInstallationAuthentication(
-  state: StrategyOptionsWithDefaults,
+  state: State,
   options: InstallationAuthOptions,
   customRequest?: RequestInterface
 ): Promise<InstallationAccessTokenAuthentication> {