diff --git a/README.md b/README.md
index 250b6ec..4dc0ce2 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,10 @@ In order to use this action, you will need to generate a JSON file using the fol
 
 **Optional** Ignore if the file which contains annotations is missing. Default: "true".
 
+### `commit`
+
+**Optional** Commit SHA to which annotations are published.
+
 ## Example usage
 
 ```yml
diff --git a/action.yml b/action.yml
index 4164854..0ce6297 100644
--- a/action.yml
+++ b/action.yml
@@ -23,6 +23,9 @@ inputs:
     description: 'Ignore if the file which contains annotations is missing'
     required: false
     default: 'true'
+  commit:
+    description: 'Commit SHA to which annotations are published.'
+    required: false
 runs:
   using: 'node16'
   main: 'dist/index.js'
diff --git a/index.js b/index.js
index 1671ca3..9e6626e 100644
--- a/index.js
+++ b/index.js
@@ -139,9 +139,12 @@ async function run () {
     const title = getInput('title', { required: false })
 
     const octokit = getOctokit(repoToken)
+    const commitId = getInput('commit', { required: false }}
     const pullRequest = context.payload.pull_request
     let ref
-    if (pullRequest) {
+    if (commitId) {
+      ref = commitId
+    } else if (pullRequest) {
       ref = pullRequest.head.sha
     } else {
       ref = context.sha