diff --git a/.github/workflows/add-pr-comment.yml b/.github/workflows/add-pr-comment.yml
index 66916fa..3e09cd6 100644
--- a/.github/workflows/add-pr-comment.yml
+++ b/.github/workflows/add-pr-comment.yml
@@ -10,7 +10,7 @@ jobs:
 
       - name: Find Pull Request
         id: find-pr
-        uses: kylorhall/find-github-pull-request@v0.0.4
+        uses: kylorhall/find-github-pull-request@master
         with:
           failIfNotFound: true
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..1182cda
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,23 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.0.0] - 2021-09-07
+
+Basically the initial working release.
+
+**PRs:**
+
+- [#2](https://github.com/sharesight/find-github-pull-request/pull/2)
+- [#3](https://github.com/sharesight/find-github-pull-request/pull/3)
+- [#4](https://github.com/sharesight/find-github-pull-request/pull/4)
+- [#5](https://github.com/sharesight/find-github-pull-request/pull/5)
+- [#6](https://github.com/sharesight/find-github-pull-request/pull/6)
+
+#### [0.0.1] – [0.0.4] - 2021-09-06
+
+Tinkering and initial working release.
diff --git a/README.md b/README.md
index fc49055..10dfb3d 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ jobs:
 
       - name: Find Pull Request
         id: find-pr
-        uses: kylorhall/find-github-pull-request@v0.0.4
+        uses: kylorhall/find-github-pull-request@v1.0.0
         with:
           # These are all default values.
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/package.json b/package.json
index 9705fc4..b868fbb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "find-github-pull-request",
-  "version": "0.0.4",
+  "version": "1.0.0",
   "description": "Find a Github Pull Request in a Github Action",
   "main": "dist/index.js",
   "author": {