diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9000f33..500ba7f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,14 @@
-# Change Log
+# Changelog
+
+All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
+
+## [3.9.0](https://github.com/coopernurse/node-pool/compare/v3.8.2...v3.9.0) (2022-09-10)
+
+
+### Bug Fixes
+
+* add ready function to index.d.ts ([0a5ef1d](https://github.com/coopernurse/node-pool/commit/0a5ef1dd9124ea7d56626c7cc295e181c15ad4e2))
+* unref setTimeout in pool ([e94fd37](https://github.com/coopernurse/node-pool/commit/e94fd374266acb1531b986050ba7486b03b18250))
 
 ## [3.7.1] - March 28 2019
 - fix #257 - `pool.use` now destroys resources on rejection, matching the docs.
diff --git a/package.json b/package.json
index 5f16387..a4fa922 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "generic-pool",
   "description": "Generic resource pooling for Node.JS",
   "homepage": "https://github.com/coopernurse/node-pool#readme",
-  "version": "3.8.2",
+  "version": "3.9.0",
   "main": "index.js",
   "author": {
     "email": "james@bitmechanic.com",
@@ -13,10 +13,6 @@
       "name": "James Butler",
       "email": "james.butler@sandfox.co.uk"
     },
-    {
-      "name": "James Cooper",
-      "email": "james@bitmechanic.com"
-    },
     {
       "name": "Kiko Beats",
       "email": "josefrancisco.verdu@gmail.com"
@@ -33,118 +29,138 @@
       "name": "Bryan Donovan",
       "email": "bdondo@gmail.com"
     },
+    {
+      "name": "C-h-e-r-r-y",
+      "email": "C-h-e-r-r-y@users.noreply.github.com"
+    },
     {
       "name": "rebareba",
       "email": "forcdc1990@gmail.com"
     },
     {
-      "name": "Thomas Dimson",
-      "email": "tdimson@gmail.com"
+      "name": "t3hmrman",
+      "email": "t3hmrman@gmail.com"
     },
     {
-      "name": "C-h-e-r-r-y",
-      "email": "C-h-e-r-r-y@users.noreply.github.com"
+      "name": "Thomas Dimson",
+      "email": "tdimson@gmail.com"
     },
     {
-      "name": "t3hmrman",
-      "email": "t3hmrman@gmail.com"
+      "name": "Anup Baldawa",
+      "email": "anup@joinhoney.com"
     },
     {
       "name": "Kevin Burke",
       "email": "burke@shyp.com"
     },
     {
-      "name": "Peter Galiba",
-      "email": "poetro@poetro.hu"
+      "name": "Teow Hua Jun",
+      "email": "huajun@Teows-MacBook-Pro.local"
     },
     {
       "name": "Joe Z",
       "email": "jzarate@gmail.com"
     },
     {
-      "name": "Anup Baldawa",
-      "email": "anup@joinhoney.com"
+      "name": "Peter Galiba",
+      "email": "poetro@poetro.hu"
     },
     {
-      "name": "travis4all",
-      "email": "travis4all@diamon.dz"
+      "name": "Asbjørn Sannes",
+      "email": "asbjorn.sannes@interhost.no"
     },
     {
-      "name": "windyrobin",
-      "email": "windyrobin@Gmail.com"
+      "name": "san00",
+      "email": "c5d59d07@opayq.com"
     },
     {
-      "name": "Nayana Hettiarachchi",
-      "email": "nayana@corp-gems.com"
+      "name": "Christian d'Heureuse",
+      "email": "chdh@inventec.ch"
     },
     {
-      "name": "Felix Becker",
-      "email": "felix.b@outlook.com"
+      "name": "Ryan Dao",
+      "email": "ddao@paypal.com"
     },
     {
-      "name": "Geovani de Souza",
-      "email": "geovanisouza92@gmail.com"
+      "name": "Diego Rodríguez Baquero",
+      "email": "diegorbaquero@gmail.com"
     },
     {
-      "name": "Ryan Dao",
-      "email": "ddao@paypal.com"
+      "name": "Felix Becker",
+      "email": "felix.b@outlook.com"
     },
     {
-      "name": "Sushant",
-      "email": "sushantdhiman@outlook.com"
+      "name": "Geovani de Souza",
+      "email": "geovanisouza92@gmail.com"
     },
     {
       "name": "Jemila",
       "email": "jemila.abulhawa@gmail.com"
     },
     {
-      "name": "Christian d'Heureuse",
-      "email": "chdh@inventec.ch"
+      "name": "Justin Robinson",
+      "email": "jrobinson@redventures.com"
     },
     {
-      "name": "Will Shaver",
-      "email": "will.shaver@emberex.com"
+      "name": "linchuang",
+      "email": "linchuang@tencent.com"
     },
     {
-      "name": "Justin Robinson",
-      "email": "jrobinson@redventures.com"
+      "name": "Nayana Hettiarachchi",
+      "email": "nayana@corp-gems.com"
     },
     {
-      "name": "Diego Rodríguez Baquero",
-      "email": "diegorbaquero@gmail.com"
+      "name": "restjohn",
+      "email": "restjohn@users.noreply.github.com"
     },
     {
-      "name": "Asbjørn Sannes",
-      "email": "asbjorn.sannes@interhost.no"
+      "name": "Sushant",
+      "email": "sushantdhiman@outlook.com"
     },
     {
-      "name": "linchuang",
-      "email": "linchuang@tencent.com"
+      "name": "travis4all",
+      "email": "travis4all@diamon.dz"
     },
     {
-      "name": "restjohn",
-      "email": "restjohn@users.noreply.github.com"
+      "name": "Will Shaver",
+      "email": "will.shaver@emberex.com"
     },
     {
-      "name": "san00",
-      "email": "c5d59d07@opayq.com"
+      "name": "windyrobin",
+      "email": "windyrobin@Gmail.com"
     },
     {
       "name": "王秋石",
       "email": "12qiushi@163.com"
     },
     {
-      "name": "An Nguyen Le",
-      "email": "nguyenan169@gmail.com"
+      "name": "Stephen Cresswell",
+      "email": "229672+cressie176@users.noreply.github.com"
     },
     {
       "name": "Arek Flinik",
       "email": "aflinik@gmail.com"
     },
+    {
+      "name": "Alexander Tesfamichael",
+      "email": "Alex.Tesfamichael@gmail.com"
+    },
+    {
+      "name": "calibr",
+      "email": "awcalibr@gmail.com"
+    },
+    {
+      "name": "benny-medflyt",
+      "email": "benny@medflyt.com"
+    },
     {
       "name": "Bryan Kaplan",
       "email": "bryan@pinchit.com"
     },
+    {
+      "name": "Dumitru Uzun",
+      "email": "contact@duzun.me"
+    },
     {
       "name": "Douglas Christopher Wilson",
       "email": "doug@somethingdoug.com"
@@ -154,8 +170,12 @@
       "email": "drewrathbone@gmail.com"
     },
     {
-      "name": "Dumitru Uzun",
-      "email": "contact@duzun.me"
+      "name": "Magnus Eide",
+      "email": "eide@iterate.no"
+    },
+    {
+      "name": "gdusbabek",
+      "email": "gdusbabek@gmail.com"
     },
     {
       "name": "Jason Rhodes",
@@ -170,24 +190,28 @@
       "email": "lewis@getsentry.com"
     },
     {
-      "name": "Louis Roché",
-      "email": "mail+github@louisroche.net"
+      "name": "Tom MacWright",
+      "email": "macwright@gmail.com"
     },
     {
-      "name": "Magnus Eide",
-      "email": "eide@iterate.no"
+      "name": "Louis Roché",
+      "email": "mail+github@louisroche.net"
     },
     {
       "name": "Mike Morris",
       "email": "mikemorris@users.noreply.github.com"
     },
     {
-      "name": "Piotr",
-      "email": "pwalc@agora.pl"
+      "name": "molipet",
+      "email": "molipet@gmail.com"
     },
     {
-      "name": "Rajesh kumar",
-      "email": "zazzel.cvs@gmail.com"
+      "name": "An Nguyen Le",
+      "email": "nguyenan169@gmail.com"
+    },
+    {
+      "name": "Piotr",
+      "email": "pwalc@agora.pl"
     },
     {
       "name": "Randall Leeds",
@@ -201,10 +225,6 @@
       "name": "Sandro Santilli",
       "email": "strk@keybit.net"
     },
-    {
-      "name": "Stephen Cresswell",
-      "email": "229672+cressie176@users.noreply.github.com"
-    },
     {
       "name": "Teemu Ikonen",
       "email": "teemu.ikonen@iki.fi"
@@ -221,37 +241,21 @@
       "name": "Thomas Watson Steen",
       "email": "w@tson.dk"
     },
-    {
-      "name": "Tom MacWright",
-      "email": "macwright@gmail.com"
-    },
     {
       "name": "Wilfred van der Deijl",
       "email": "wilfred@vanderdeijl.com"
     },
     {
-      "name": "Young Hahn",
-      "email": "young@developmentseed.org"
-    },
-    {
-      "name": "benny-medflyt",
-      "email": "benny@medflyt.com"
-    },
-    {
-      "name": "calibr",
-      "email": "awcalibr@gmail.com"
-    },
-    {
-      "name": "gdusbabek",
-      "email": "gdusbabek@gmail.com"
+      "name": "Yanlong Wang",
+      "email": "yanlong.wang@naiver.org"
     },
     {
-      "name": "molipet",
-      "email": "molipet@gmail.com"
+      "name": "Young Hahn",
+      "email": "young@developmentseed.org"
     },
     {
-      "name": "Alexander Tesfamichael",
-      "email": "Alex.Tesfamichael@gmail.com"
+      "name": "Rajesh kumar",
+      "email": "zazzel.cvs@gmail.com"
     }
   ],
   "repository": {