diff --git a/package-lock.json b/package-lock.json
index 662c93a..a9061ea 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -724,6 +724,12 @@
       "integrity": "sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==",
       "dev": true
     },
+    "@types/js-cookie": {
+      "version": "2.2.4",
+      "resolved": "https://registry.npmjs.org/@types/js-cookie/-/js-cookie-2.2.4.tgz",
+      "integrity": "sha512-WTfSE1Eauak/Nrg6cA9FgPTFvVawejsai6zXoq0QYTQ3mxONeRtGhKxa7wMlUzWWmzrmTeV+rwLjHgsCntdrsA==",
+      "dev": true
+    },
     "@types/json-schema": {
       "version": "7.0.3",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.3.tgz",
diff --git a/package.json b/package.json
index e3c8c79..270ac3c 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,7 @@
   },
   "devDependencies": {
     "@types/jest": "24.0.22",
+    "@types/js-cookie": "2.2.4",
     "@types/node": "10.14.7",
     "@types/react": "16.8.18",
     "@types/react-dom": "16.8.4",
diff --git a/src/auth.ts b/src/auth.ts
index ec37361..6662530 100644
--- a/src/auth.ts
+++ b/src/auth.ts
@@ -25,7 +25,7 @@ export function getTokenCookie(): string {
   return Cookies.get("jwt");
 }
 
-export function deleteTokenCookie(): string {
+export function deleteTokenCookie(): void {
   return Cookies.remove("jwt");
 }