diff --git a/lib/nano.js b/lib/nano.js
index fd85bc0..70a9965 100644
--- a/lib/nano.js
+++ b/lib/nano.js
@@ -17,7 +17,6 @@ const axios = require('axios').default
 const axiosCookieJarSupport = require('axios-cookiejar-support').default
 const tough = require('tough-cookie')
 axiosCookieJarSupport(axios)
-const cookieJar = new tough.CookieJar()
 const stream = require('stream')
 const http = require('http')
 const https = require('https')
@@ -73,6 +72,8 @@ module.exports = exports = function dbScope (cfg) {
 
   cfg = Object.assign({}, cfg)
 
+  cfg.cookieJar = new tough.CookieJar()
+
   serverScope.config = cfg
   cfg.requestDefaults = cfg.requestDefaults || {}
 
@@ -273,7 +274,7 @@ module.exports = exports = function dbScope (cfg) {
     const isJar = opts.jar || cfg.jar || (cfg.requestDefaults && cfg.requestDefaults.jar)
 
     if (isJar) {
-      req.jar = cookieJar
+      req.jar = cfg.cookieJar
       req.withCredentials = true
     }
 
@@ -366,7 +367,7 @@ module.exports = exports = function dbScope (cfg) {
     // ?drilldown=["author","Dickens"]&drilldown=["publisher","Penguin"]
     req.qsStringifyOptions = { arrayFormat: 'repeat' }
 
-    cfg.cookies = cookieJar.getCookiesSync(cfg.url)
+    cfg.cookies = cfg.cookieJar.getCookiesSync(cfg.url)
 
     // This where the HTTP request is made.
     // Nano used to use the now-deprecated "request" library but now we're going to
diff --git a/test/nano.auth.test.js b/test/nano.auth.test.js
index f0c71d6..d124dbc 100644
--- a/test/nano.auth.test.js
+++ b/test/nano.auth.test.js
@@ -13,24 +13,36 @@
 const Nano = require('..')
 const COUCH_URL = 'http://localhost:5984'
 const nano = Nano({ url: COUCH_URL, jar: true })
+const nano2 = Nano({ url: COUCH_URL, jar: true })
 const nock = require('nock')
 
 afterEach(() => {
   nock.cleanAll()
 })
 
-test('should be able to authenticate - POST /_session - nano.auth', async () => {
+test('should be able to authenticate multiple separate sessions - POST /_session - nano.auth', async () => {
   // mocks
   const username = 'u'
+  const username2 = 'u2'
   const password = 'p'
+  const password2 = 'p2'
   const response = { ok: true, name: 'admin', roles: ['_admin', 'admin'] }
+  const response2 = { ok: true, name: 'operator', roles: ['_admin'] }
   const authsession = 'AuthSession=YWRtaW46NUU0MTFBMDE6stHsxYnlDy4mYxwZEcnXHn4fm5w;'
+  const authsession2 = 'AuthSession=XYZtaW46NUU0MTFBMDE6stHsxYnlDy4mYxwZEcnXHn4123;'
   const cookie = authsession + ' Version=1; Expires=Mon, 10-Feb-2050 09:03:21 GMT; Max-Age=600; Path=/; HttpOnly'
+  const cookie2 = authsession2 + ' Version=1; Expires=Fri Jun 10 2022 20:13:00 GMT; Max-Age=300; Path=/; HttpOnly'
   const scope = nock(COUCH_URL)
     .post('/_session', 'name=u&password=p', { 'content-type': 'application/x-www-form-urlencoded; charset=utf-8' })
     .reply(200, response, { 'Set-Cookie': cookie })
     .get('/_all_dbs')
     .reply(200, ['a'])
+    .post('/_session', 'name=u2&password=p2', { 'content-type': 'application/x-www-form-urlencoded; charset=utf-8' })
+    .reply(200, response2, { 'Set-Cookie': cookie2 })
+    .get('/_all_dbs')
+    .reply(200, ['a'])
+    .get('/_all_dbs')
+    .reply(200, ['a'])
 
   // test POST /_session
   const p = await nano.auth(username, password)
@@ -38,5 +50,17 @@ test('should be able to authenticate - POST /_session - nano.auth', async () =>
   await nano.db.list()
   expect(nano.config.cookies.length).toBe(1)
   expect(nano.config.cookies[0].toString().startsWith(authsession)).toBe(true)
+
+  // test POST /_session
+  const p2 = await nano2.auth(username2, password2)
+  expect(p2).toStrictEqual(response2)
+  await nano2.db.list()
+  expect(nano2.config.cookies.length).toBe(1)
+  expect(nano2.config.cookies[0].toString()).toMatch(new RegExp('^' + authsession2))
+
+  await nano.db.list()
+  expect(nano.config.cookies.length).toBe(1)
+  expect(nano.config.cookies[0].toString()).toMatch(new RegExp('^' + authsession))
+
   expect(scope.isDone()).toBe(true)
 })