diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..765e18d
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,32 @@
+# Changelog
+
+## [1.0.0](https://www.github.com/sttk/undertaker/compare/v0.13.1...v1.0.0) (2023-09-08)
+
+
+### ⚠ BREAKING CHANGES
+
+* Stop inspecting UNDERTAKER_TIME_RESOLUTION environment variable (#98)
+* Normalize repository, dropping node <10.13 support (#97)
+
+### Bug Fixes
+
+* Avoid setting displayName on series/parallel functions (ref gulpjs/gulp[#2270](https://www.github.com/sttk/undertaker/issues/2270)) ([#91](https://www.github.com/sttk/undertaker/issues/91)) ([1ee58b1](https://www.github.com/sttk/undertaker/commit/1ee58b1a374af428607fd67362895ac30927073c))
+* Capture start time only on successful completion ([1a17780](https://www.github.com/sttk/undertaker/commit/1a17780354a35d6a67cc90d1938862ba977997e2))
+* Consistent naming for functions created by series/parallel ([9e9ca31](https://www.github.com/sttk/undertaker/commit/9e9ca31da4d68e1342dfd869f0422c30c291425a))
+* Emit an error even if settling & only emit the first error in an array of errors ([206c088](https://www.github.com/sttk/undertaker/commit/206c08898681d2dddacd14f0d97b94d0be3d89ea))
+* Ensure some task tests are actually running ([f94fd87](https://www.github.com/sttk/undertaker/commit/f94fd87143b9ff81e92e193ab3c9484b787770a6))
+* Ignore leaked global from `sparkles` ([818450b](https://www.github.com/sttk/undertaker/commit/818450bd6bb834a351624d5a505225bd1a578993))
+* Improve integration tests, especially on Windows ([a2a2f73](https://www.github.com/sttk/undertaker/commit/a2a2f73ba281b85ba83fa14c1601958e11f9605b))
+* Inline anonymous functions to get tests passing on newer nodes ([#70](https://www.github.com/sttk/undertaker/issues/70)) ([ffcb044](https://www.github.com/sttk/undertaker/commit/ffcb04412b824a50adecca4831395c32b1685ce1))
+* Keep task name precedence consistent ([ec61638](https://www.github.com/sttk/undertaker/commit/ec61638d5555af423e29d193a15e7269283b3591))
+* Make linting pass & add pretest hook ([52c3cad](https://www.github.com/sttk/undertaker/commit/52c3cad218dbea789464dfde7b48e2105f317fcc))
+* Remove conditional use of es6-weak-map ([7f076bd](https://www.github.com/sttk/undertaker/commit/7f076bd1b43cc53b172c353cf24ee274ea7b5db3))
+* Support modified functions in custom registries ([edd3487](https://www.github.com/sttk/undertaker/commit/edd34876e52cd55ff2b286d0a2619bb8fd4a18d5))
+* Support task aliases ([25c2a90](https://www.github.com/sttk/undertaker/commit/25c2a906037fccce58afae3017e7e9ba0591c117))
+* Validate series/parallel arguments aren't empty or invalid (fixes [#72](https://www.github.com/sttk/undertaker/issues/72)) ([#75](https://www.github.com/sttk/undertaker/issues/75)) ([5464736](https://www.github.com/sttk/undertaker/commit/546473622f41daa1ac45144506b51e66140444b8))
+
+
+### Miscellaneous Chores
+
+* Normalize repository, dropping node <10.13 support ([#97](https://www.github.com/sttk/undertaker/issues/97)) ([b270c28](https://www.github.com/sttk/undertaker/commit/b270c2852c8398c26f1ac5b1fb80cd6e2aebdf89))
+* Stop inspecting UNDERTAKER_TIME_RESOLUTION environment variable ([#98](https://www.github.com/sttk/undertaker/issues/98)) ([e255fc7](https://www.github.com/sttk/undertaker/commit/e255fc7c9be27d11dc8a711a3f15e058040e712c))
diff --git a/package.json b/package.json
index c2d89d0..8b8de7f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "undertaker",
-  "version": "1.3.0",
+  "version": "1.0.0",
   "description": "Task registry that allows composition through series/parallel methods.",
   "author": "Gulp Team <team@gulpjs.com> (https://gulpjs.com/)",
   "contributors": [