diff --git a/action.yml b/action.yml
index efdb148..e54f3d6 100644
--- a/action.yml
+++ b/action.yml
@@ -14,6 +14,10 @@ inputs:
     description: 'The name of the base reference'
     default: ''
     required: false
+  reverse:
+    description: 'Git log is chronological order by default. Set to true to reverse chronological order. '
+    default: 'false'
+    required: false
 outputs:
   changelog:
     description: 'Markdown formatted changelog'
diff --git a/changelog.sh b/changelog.sh
index 70408f2..1f8f3c2 100755
--- a/changelog.sh
+++ b/changelog.sh
@@ -4,6 +4,11 @@ set -eou pipefail
 head_ref=$1
 base_ref=$2
 repo_url=$3
+extra_flags=""
+
+if [ "$4" == "true" ]; then
+  extra_flags='--reverse'
+fi
 
 # By default a GitHub action checkout is shallow. Get all the tags, branches,
 # and history. Redirect output to standard error which we can collect in the
@@ -20,9 +25,12 @@ then
   base_ref=$(git rev-list --max-parents=0 HEAD)
 fi
 
+# Bash quoting will get you. Do not quote the extra_flags. If its null
+# we want it to disappear. If you quote it, it will go to git as an ""
+# and thats not a valid arg.
 log=$(git log "${base_ref}...${head_ref}" \
   --pretty=format:"- [%h](http://github.com/${repo_url}/commit/%H) - %s" \
-  --reverse)
+  ${extra_flags})
 
 if [ -z "$log" ];
 then
diff --git a/dist/changelog.sh b/dist/changelog.sh
index 70408f2..82150bd 100755
--- a/dist/changelog.sh
+++ b/dist/changelog.sh
@@ -5,6 +5,11 @@ head_ref=$1
 base_ref=$2
 repo_url=$3
 
+reverse = ""
+if [ $strval1 != "true" ]; then
+  reverse = "--reverse"
+fi
+
 # By default a GitHub action checkout is shallow. Get all the tags, branches,
 # and history. Redirect output to standard error which we can collect in the
 # action.
@@ -22,7 +27,7 @@ fi
 
 log=$(git log "${base_ref}...${head_ref}" \
   --pretty=format:"- [%h](http://github.com/${repo_url}/commit/%H) - %s" \
-  --reverse)
+  ${reverse})
 
 if [ -z "$log" ];
 then
diff --git a/dist/index.js b/dist/index.js
index f46da04..96905a1 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -7677,6 +7677,7 @@ async function run() {
     var headRef = (0,_actions_core__WEBPACK_IMPORTED_MODULE_0__.getInput)('head-ref')
     var baseRef = (0,_actions_core__WEBPACK_IMPORTED_MODULE_0__.getInput)('base-ref')
     const myToken = (0,_actions_core__WEBPACK_IMPORTED_MODULE_0__.getInput)('myToken')
+    const reverse = (0,_actions_core__WEBPACK_IMPORTED_MODULE_0__.getInput)('reverse')
     const octokit = new _actions_github__WEBPACK_IMPORTED_MODULE_2__.getOctokit(myToken)
     const { owner, repo } = _actions_github__WEBPACK_IMPORTED_MODULE_2__.context.repo
     const regexp = /^[.A-Za-z0-9_-]*$/
@@ -7708,7 +7709,7 @@ async function run() {
       regexp.test(headRef) &&
       regexp.test(baseRef)
     ) {
-      getChangelog(headRef, baseRef, owner + '/' + repo)
+      getChangelog(headRef, baseRef, owner + '/' + repo, reverse)
     } else {
       (0,_actions_core__WEBPACK_IMPORTED_MODULE_0__.setFailed)(
         'Branch names must contain only numbers, strings, underscores, periods, and dashes.'
@@ -7719,7 +7720,7 @@ async function run() {
   }
 }
 
-async function getChangelog(headRef, baseRef, repoName) {
+async function getChangelog(headRef, baseRef, repoName, reverse) {
   try {
     let output = ''
     let err = ''
@@ -7736,7 +7737,11 @@ async function getChangelog(headRef, baseRef, repoName) {
     }
     options.cwd = './'
 
-    await (0,_actions_exec__WEBPACK_IMPORTED_MODULE_1__.exec)(__nccwpck_require__.ab + "changelog.sh", [headRef, baseRef, repoName], options)
+    await (0,_actions_exec__WEBPACK_IMPORTED_MODULE_1__.exec)(
+      __nccwpck_require__.ab + "changelog.sh",
+      [headRef, baseRef, repoName, reverse],
+      options
+    )
 
     if (output) {
       console.log(
diff --git a/index.js b/index.js
index 071c091..b17fefc 100644
--- a/index.js
+++ b/index.js
@@ -9,6 +9,7 @@ async function run() {
     var headRef = getInput('head-ref')
     var baseRef = getInput('base-ref')
     const myToken = getInput('myToken')
+    const reverse = getInput('reverse')
     const octokit = new getOctokit(myToken)
     const { owner, repo } = context.repo
     const regexp = /^[.A-Za-z0-9_-]*$/
@@ -40,7 +41,7 @@ async function run() {
       regexp.test(headRef) &&
       regexp.test(baseRef)
     ) {
-      getChangelog(headRef, baseRef, owner + '/' + repo)
+      getChangelog(headRef, baseRef, owner + '/' + repo, reverse)
     } else {
       setFailed(
         'Branch names must contain only numbers, strings, underscores, periods, and dashes.'
@@ -51,7 +52,7 @@ async function run() {
   }
 }
 
-async function getChangelog(headRef, baseRef, repoName) {
+async function getChangelog(headRef, baseRef, repoName, reverse) {
   try {
     let output = ''
     let err = ''
@@ -68,7 +69,11 @@ async function getChangelog(headRef, baseRef, repoName) {
     }
     options.cwd = './'
 
-    await _exec(`${src}/changelog.sh`, [headRef, baseRef, repoName], options)
+    await _exec(
+      `${src}/changelog.sh`,
+      [headRef, baseRef, repoName, reverse],
+      options
+    )
 
     if (output) {
       console.log(