diff --git a/types/koa-session/index.d.ts b/types/koa-session/index.d.ts
index 08e6e66f70..512b888e1c 100644
--- a/types/koa-session/index.d.ts
+++ b/types/koa-session/index.d.ts
@@ -1,9 +1,10 @@
-// Type definitions for koa-session 5.7
+// Type definitions for koa-session 5.10
 // Project: https://github.com/koajs/session
 // Definitions by: Yu Hsin Lu <https://github.com/kerol2r20>
 //                 Tomek Łaziuk <https://github.com/tlaziuk>
+//                 Hiroshi Ioka <https://github.com/hirochachacha>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.3
+// TypeScript Version: 2.8
 
 /* =================== USAGE ===================
 
@@ -16,6 +17,9 @@
  =============================================== */
 
 import Koa = require("koa");
+import Cookies = require("cookies");
+
+type Omit<T, K> = Pick<T, Exclude<keyof T, K>>;
 
 declare namespace session {
     /**
@@ -108,7 +112,7 @@ declare namespace session {
         hash(sess: any): string;
     }
 
-    interface opts {
+    interface opts extends Omit<Cookies.SetOption, 'maxAge'> {
         /**
          * cookie key (default is koa:sess)
          */
@@ -121,21 +125,6 @@ declare namespace session {
          */
         maxAge?: number | "session";
 
-        /**
-         * can overwrite or not (default true)
-         */
-        overwrite: boolean;
-
-        /**
-         * httpOnly or not (default true)
-         */
-        httpOnly: boolean;
-
-        /**
-         * signed or not (default true)
-         */
-        signed: boolean;
-
         /**
          * custom encode method
          */
diff --git a/types/koa-session/koa-session-tests.ts b/types/koa-session/koa-session-tests.ts
index a647b43e42..4930a6f1c2 100644
--- a/types/koa-session/koa-session-tests.ts
+++ b/types/koa-session/koa-session-tests.ts
@@ -37,6 +37,7 @@ app.use(session({
             console.log(key);
         },
     },
+    path: "/",
 }, app));
 
 app.use((ctx, next) => {
diff --git a/types/koa2-session-redis/index.d.ts b/types/koa2-session-redis/index.d.ts
index 24e85e1674..049c655f5f 100644
--- a/types/koa2-session-redis/index.d.ts
+++ b/types/koa2-session-redis/index.d.ts
@@ -2,7 +2,7 @@
 // Project: https://github.com/lonord/koa2-session-redis
 // Definitions by: Dima Mukhin <https://github.com/DimaMukhin>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.3
+// TypeScript Version: 2.8
 
 import * as Redis from 'redis';
 import * as session from 'koa-session';