diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index d5ea8c6..d216afb 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -1,13 +1,13 @@
 name: Run Tests
 
 on:
-  push:
-    branches: [main]
   pull_request:
     branches: [main]
+    types: [closed]
 
 jobs:
   test:
+    if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
 
     steps:
diff --git a/.github/workflows/todo.yml b/.github/workflows/todo.yml
index dbd1251..687c75e 100644
--- a/.github/workflows/todo.yml
+++ b/.github/workflows/todo.yml
@@ -1,8 +1,9 @@
 name: Smart TODO Tracker
 
 on:
-  push:
+  pull_request:
     branches: [main]
+    types: [closed]
 
   workflow_dispatch:
     inputs:
@@ -42,6 +43,7 @@ on:
 
 jobs:
   smart-todo:
+    if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
     permissions:
       contents: write
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47cf49c..97fb33f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,3 +23,7 @@
 
 ## TODO · performance
 - Refactor this logic to improve performance (`src/testTodo.ts:2`)
+
+---
+
+For DOI and licensing details, see [CITATION.cff](CITATION.cff).
diff --git a/CITATION.cff b/CITATION.cff
new file mode 100644
index 0000000..023459e
--- /dev/null
+++ b/CITATION.cff
@@ -0,0 +1,20 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it using the metadata from this file."
+title: "smart-todo-action"
+version: "1.0.0"
+repository-code: "https://github.com/DiogoRibeiro7/smart-todo-action"
+type: software
+url: "https://github.com/DiogoRibeiro7/smart-todo-action"
+date-released: 2025-06-19
+doi: "10.5281/zenodo.1234567"
+abstract: "GitHub Action that converts TODO comments into GitHub issues with optional LLM support."
+license: "MIT"
+keywords:
+  - GitHub Action
+  - automation
+authors:
+  - family-names: Ribeiro
+    given-names: Diogo
+    orcid: "https://orcid.org/0009-0001-2022-7072"
+    affiliation: "ESMAD - Instituto Politécnico do Porto"
+    email: "dfr@esmad.ipp.pt"
diff --git a/README.md b/README.md
index 9a74a6c..6067243 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 A GitHub Action that scans your codebase for inline TODOs, FIXMEs, and BUG comments, and automatically creates GitHub Issues — with support for labels, metadata parsing, and semantic enrichment.
 
+For citation information, see [CITATION.cff](CITATION.cff).
+
 ---
 
 ## 🚀 Features
@@ -42,10 +44,10 @@ jobs:
       issues: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Setup Node.js
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 20
 
@@ -174,3 +176,8 @@ current Git tag. It runs in CI and can be invoked locally with:
 ```bash
 yarn check-version
 ```
+
+## 📜 Citation
+
+If you use **smart-todo-action**, please cite it using the metadata in [CITATION.cff](CITATION.cff). This file contains the DOI and author information for reference managers.
+
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..13d9968
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,8 @@
+# Personal Information
+
+- **Name:** Diogo Ribeiro
+- **Username:** DiogoRibeiro7
+- **Personal email:** diogo.debastos.ribeiro@gmail.com
+- **Professional email:** dfr@esmad.ipp.pt
+- **Affiliation:** ESMAD - Instituto Politécnico do Porto
+- **ORCID:** https://orcid.org/0009-0001-2022-7072
diff --git a/action.yml b/action.yml
index 9747974..405e32d 100644
--- a/action.yml
+++ b/action.yml
@@ -1,5 +1,5 @@
 name: 'Smart TODO Action'
-description: 'Transforma comentários TODO/FIXME/BUG do código em GitHub Issues inteligentes.'
+description: 'Transforma comentários TODO/FIXME/BUG do código em GitHub Issues inteligentes. Consulte CITATION.cff para DOI e licença.'
 author: 'Diogo Ribeiro'
 
 inputs:
diff --git a/package.json b/package.json
index 649c408..b1e9d98 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "llm",
     "automation"
   ],
-  "author": "",
+  "author": "Diogo Ribeiro <dfr@esmad.ipp.pt>",
   "license": "MIT",
   "dependencies": {
     "@actions/core": "^1.10.0",