diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
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+++ b/.github/pull_request_template.md
@@ -0,0 +1,17 @@
+# Pull Request Template
+
+## Goal
+Describe the purpose of this PR and what it aims to achieve.
+
+## Changes
+- Summarize the main changes made in this PR.
+- Highlight any new features, fixes, or refactors.
+
+## Testing
+- Explain how these changes were tested.
+- Include steps for manual verification or automated tests.
+
+## Checklist
+- [ ] PR has a clear, descriptive title
+- [ ] Documentation / README updated if needed
+- [ ] No secrets or large temporary files included
diff --git a/labs/lab1.md b/labs/lab1.md
index 1f69d42..4fe3bce 100644
--- a/labs/lab1.md
+++ b/labs/lab1.md
@@ -1,4 +1,4 @@
-# Lab 1 — Introduction to DevOps & Git Workflow
+git config --global gpg.format ssh# Lab 1 — Introduction to DevOps & Git Workflow
 
 ![difficulty](https://img.shields.io/badge/difficulty-beginner-success)
 ![topic](https://img.shields.io/badge/topic-DevOps%20Basics-blue)
diff --git a/submission1.md b/submission1.md
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+++ b/submission1.md
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+# Benefits of Signing Commits
+
+Signed commits provide cryptographic proof of authorship. This ensures that the commit truly comes from the claimed developer and has not been modified afterward. The main benefits are:
+
+- **Authenticity**: Verifies that commits were created by a trusted source.  
+- **Integrity**: Detects if commit history was altered or tampered with.  
+- **Accountability**: Ties commits directly to an individual’s verified identity.  
+- **Security in Collaboration**: Protects against malicious actors pushing unverified or fake commits in shared repositories.  
+- **Compliance**: Some organizations require signed commits for audit and regulatory purposes.  
+
+SSH commit signature verification strengthens security by using secure keys already managed for repository access, reducing reliance on weaker authentication methods.
+Also, helpful in deployment: when you work in terminal of server with private repository.