diff --git a/action.yml b/action.yml
index 12e0f19..a2da148 100644
--- a/action.yml
+++ b/action.yml
@@ -24,6 +24,10 @@ inputs:
   github-token:
     description: 'token for github'
     default: ${{ github.server_url == 'https://github.com' && github.token || '' }}
+  issue-type:
+    description: 'validate for issue or pull request. if you want to validate pull request, you must set issue-type: "pull_request". Both issue and pull request are validated, if you set issue-type: "both". default is "issue"'
+    required: false
+    default: 'issue'
   is-auto-close:
     description: 'auto close issue if it does not meet the conditions'
     required: false
diff --git a/src/validate.ts b/src/validate.ts
index 182bce5..cad2cee 100644
--- a/src/validate.ts
+++ b/src/validate.ts
@@ -9,7 +9,7 @@ export async function validateIssueTitleAndBody(
   if (!titleRegex && !bodyRegex) {
     return true;
   }
-  if (issueType === 'issue') {
+  if (issueType === 'issue' || issueType === 'both') {
     const { title, body } = await getIssueTitleAndBody(issueNumber);
     if (titleRegex && !validate(titleRegex, title)) {
       return false;
@@ -19,7 +19,7 @@ export async function validateIssueTitleAndBody(
     }
     return true;
   }
-  if (issueType === 'pull_request') {
+  if (issueType === 'pull_request' || issueType === 'both') {
     const { title, body } = await getPullRequestTitleAndBody(issueNumber);
     if (titleRegex && !validate(titleRegex, title)) {
       return false;