diff --git a/packages/plugins/users-permissions/package.json b/packages/plugins/users-permissions/package.json
index e1e5f07263..eb0b8112c9 100644
--- a/packages/plugins/users-permissions/package.json
+++ b/packages/plugins/users-permissions/package.json
@@ -30,6 +30,7 @@
     "react-router-dom": "5.2.0",
     "redux-saga": "^0.16.0",
     "request": "^2.83.0",
+    "url-join": "4.0.1",
     "uuid": "^3.1.0"
   },
   "devDependencies": {
diff --git a/packages/plugins/users-permissions/server/services/providers.js b/packages/plugins/users-permissions/server/services/providers.js
index 9c7381dd5e..1b3dade1a0 100644
--- a/packages/plugins/users-permissions/server/services/providers.js
+++ b/packages/plugins/users-permissions/server/services/providers.js
@@ -7,6 +7,7 @@
 // Public node modules.
 const _ = require('lodash');
 const jwt = require('jsonwebtoken');
+const urlJoin = require('url-join');
 
 const { getAbsoluteServerUrl } = require('@strapi/utils');
 
@@ -167,7 +168,7 @@ module.exports = ({ strapi }) => {
                 return callback(null, {
                   username: userbody.login,
                   email: Array.isArray(emailsbody)
-                    ? emailsbody.find(email => email.primary === true).email
+                    ? emailsbody.find((email) => email.primary === true).email
                     : null,
                 });
               });
@@ -550,7 +551,7 @@ module.exports = ({ strapi }) => {
           }
 
           if (
-            !_.isEmpty(_.find(users, user => user.provider !== provider)) &&
+            !_.isEmpty(_.find(users, (user) => user.provider !== provider)) &&
             advanced.unique_email
           ) {
             return resolve([
@@ -588,7 +589,7 @@ module.exports = ({ strapi }) => {
 
   const buildRedirectUri = (provider = '') => {
     const apiPrefix = strapi.config.get('api.rest.prefix');
-    return `${getAbsoluteServerUrl(strapi.config)}/${apiPrefix}/connect/${provider}/callback`;
+    return urlJoin(getAbsoluteServerUrl(strapi.config), apiPrefix, 'connect', provider, 'callback');
   };
 
   return {
diff --git a/yarn.lock b/yarn.lock
index 08e63ee32b..39a481a7f2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -24485,7 +24485,7 @@ urix@^0.1.0:
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
   integrity sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=
 
-url-join@^4.0.0:
+url-join@4.0.1, url-join@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/url-join/-/url-join-4.0.1.tgz#b642e21a2646808ffa178c4c5fda39844e12cde7"
   integrity sha512-jk1+QP6ZJqyOiuEI9AEWQfju/nB2Pw466kbA0LEZljHwKeMgd9WrAEgEGxjPDD2+TNbbb37rTyhEfrCXfuKXnA==