diff --git a/README.md b/README.md
index 7578edd20..f76e000b3 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,7 @@ Every argument is optional.
 | [close-pr-message](#close-pr-message)                               | Comment on the staled PRs while closed                                      |                       |
 | [stale-issue-label](#stale-issue-label)                             | Label to apply on staled issues                                             | `Stale`               |
 | [close-issue-label](#close-issue-label)                             | Label to apply on closed issues                                             |                       |
+| [close-issue-reason](#close-issue-reason)                           | Reason to use when closing issues                                           |                       |
 | [stale-pr-label](#stale-pr-label)                                   | Label to apply on staled PRs                                                | `Stale`               |
 | [close-pr-label](#close-pr-label)                                   | Label to apply on closed PRs                                                |                       |
 | [exempt-issue-labels](#exempt-issue-labels)                         | Labels on issues exempted from stale                                        |                       |
@@ -219,6 +220,12 @@ It will be automatically removed if the issues are no longer closed nor locked.
 Default value: unset  
 Required Permission: `issues: write`
 
+#### close-issue-reason
+
+Specify the [reason](https://github.blog/changelog/2022-05-19-the-new-github-issues-may-19th-update/) used when closing issues. Valid values are `completed` and `not_planned`.
+
+Default value: unset
+
 #### stale-pr-label
 
 The label that will be added to the pull requests when automatically marked as stale.  
diff --git a/__tests__/constants/default-processor-options.ts b/__tests__/constants/default-processor-options.ts
index b526d12aa..ee3e7306d 100644
--- a/__tests__/constants/default-processor-options.ts
+++ b/__tests__/constants/default-processor-options.ts
@@ -50,5 +50,6 @@ export const DefaultProcessorOptions: IIssuesProcessorOptions = Object.freeze({
   ignoreUpdates: false,
   ignoreIssueUpdates: undefined,
   ignorePrUpdates: undefined,
-  exemptDraftPr: false
+  exemptDraftPr: false,
+  closeIssueReason: ''
 });
diff --git a/dist/index.js b/dist/index.js
index f017e13a3..bec2b12c3 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -885,7 +885,8 @@ class IssuesProcessor {
                         owner: github_1.context.repo.owner,
                         repo: github_1.context.repo.repo,
                         issue_number: issue.number,
-                        state: 'closed'
+                        state: 'closed',
+                        state_reason: this.options.closeIssueReason || undefined
                     });
                 }
             }
@@ -1892,6 +1893,7 @@ var Option;
     Option["IgnoreIssueUpdates"] = "ignore-issue-updates";
     Option["IgnorePrUpdates"] = "ignore-pr-updates";
     Option["ExemptDraftPr"] = "exempt-draft-pr";
+    Option["CloseIssueReason"] = "close-issue-reason";
 })(Option = exports.Option || (exports.Option = {}));
 
 
@@ -2202,7 +2204,8 @@ function _getAndValidateArgs() {
         ignoreUpdates: core.getInput('ignore-updates') === 'true',
         ignoreIssueUpdates: _toOptionalBoolean('ignore-issue-updates'),
         ignorePrUpdates: _toOptionalBoolean('ignore-pr-updates'),
-        exemptDraftPr: core.getInput('exempt-draft-pr') === 'true'
+        exemptDraftPr: core.getInput('exempt-draft-pr') === 'true',
+        closeIssueReason: core.getInput('close-issue-reason')
     };
     for (const numberInput of [
         'days-before-stale',
@@ -2225,6 +2228,12 @@ function _getAndValidateArgs() {
             }
         }
     }
+    const validCloseReasons = ['', 'completed', 'not_planned'];
+    if (!validCloseReasons.includes(args.closeIssueReason)) {
+        const errorMessage = `Unrecognized close-issue-reason "${args.closeIssueReason}", valid values are: ${validCloseReasons.filter(Boolean).join(', ')}`;
+        core.setFailed(errorMessage);
+        throw new Error(errorMessage);
+    }
     return args;
 }
 function processOutput(staledIssues, closedIssues) {
diff --git a/src/classes/issue.spec.ts b/src/classes/issue.spec.ts
index ccd32d51a..0a60d1a58 100644
--- a/src/classes/issue.spec.ts
+++ b/src/classes/issue.spec.ts
@@ -61,7 +61,8 @@ describe('Issue', (): void => {
       ignoreUpdates: false,
       ignoreIssueUpdates: undefined,
       ignorePrUpdates: undefined,
-      exemptDraftPr: false
+      exemptDraftPr: false,
+      closeIssueReason: ''
     };
     issueInterface = {
       title: 'dummy-title',
diff --git a/src/classes/issues-processor.ts b/src/classes/issues-processor.ts
index 89ca2d04e..d603a5f2f 100644
--- a/src/classes/issues-processor.ts
+++ b/src/classes/issues-processor.ts
@@ -865,7 +865,8 @@ export class IssuesProcessor {
           owner: context.repo.owner,
           repo: context.repo.repo,
           issue_number: issue.number,
-          state: 'closed'
+          state: 'closed',
+          state_reason: this.options.closeIssueReason || undefined
         });
       }
     } catch (error) {
diff --git a/src/enums/option.ts b/src/enums/option.ts
index f7167c725..38cfb193d 100644
--- a/src/enums/option.ts
+++ b/src/enums/option.ts
@@ -46,5 +46,6 @@ export enum Option {
   IgnoreUpdates = 'ignore-updates',
   IgnoreIssueUpdates = 'ignore-issue-updates',
   IgnorePrUpdates = 'ignore-pr-updates',
-  ExemptDraftPr = 'exempt-draft-pr'
+  ExemptDraftPr = 'exempt-draft-pr',
+  CloseIssueReason = 'close-issue-reason'
 }
diff --git a/src/interfaces/issues-processor-options.ts b/src/interfaces/issues-processor-options.ts
index 8adbfb4a5..496584e87 100644
--- a/src/interfaces/issues-processor-options.ts
+++ b/src/interfaces/issues-processor-options.ts
@@ -51,4 +51,5 @@ export interface IIssuesProcessorOptions {
   ignoreIssueUpdates: boolean | undefined;
   ignorePrUpdates: boolean | undefined;
   exemptDraftPr: boolean;
+  closeIssueReason: string;
 }
diff --git a/src/main.ts b/src/main.ts
index af96654c5..770aa1163 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -87,7 +87,8 @@ function _getAndValidateArgs(): IIssuesProcessorOptions {
     ignoreUpdates: core.getInput('ignore-updates') === 'true',
     ignoreIssueUpdates: _toOptionalBoolean('ignore-issue-updates'),
     ignorePrUpdates: _toOptionalBoolean('ignore-pr-updates'),
-    exemptDraftPr: core.getInput('exempt-draft-pr') === 'true'
+    exemptDraftPr: core.getInput('exempt-draft-pr') === 'true',
+    closeIssueReason: core.getInput('close-issue-reason')
   };
 
   for (const numberInput of [
@@ -113,6 +114,15 @@ function _getAndValidateArgs(): IIssuesProcessorOptions {
     }
   }
 
+  const validCloseReasons = ['', 'completed', 'not_planned'];
+  if (!validCloseReasons.includes(args.closeIssueReason)) {
+    const errorMessage = `Unrecognized close-issue-reason "${
+      args.closeIssueReason
+    }", valid values are: ${validCloseReasons.filter(Boolean).join(', ')}`;
+    core.setFailed(errorMessage);
+    throw new Error(errorMessage);
+  }
+
   return args;
 }