diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
new file mode 100644
index 0000000..3388d12
--- /dev/null
+++ b/.github/workflows/codecov.yml
@@ -0,0 +1,21 @@
+---
+name: codecov
+on:
+  push:
+    branches:
+      - master
+jobs:
+  codecov:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 2.7
+      - run: bundle update
+      - run: bundle exec rake
+      - uses: codecov/codecov-action@v4.0.0-beta.3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: coverage/.resultset.json
+          fail_ci_if_error: true
diff --git a/.github/workflows/pdd.yml b/.github/workflows/pdd.yml
index 28ecd06..78277a2 100644
--- a/.github/workflows/pdd.yml
+++ b/.github/workflows/pdd.yml
@@ -2,10 +2,14 @@
 name: pdd
 on:
   push:
+    branches:
+      - master
   pull_request:
+    branches:
+      - master
 jobs:
   pdd:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: g4s8/pdd-action@master
+      - uses: volodya-lombrozo/pdd-action@master
diff --git a/README.md b/README.md
index 89be687..89c1a91 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
+[![DevOps By Rultor.com](http://www.rultor.com/b/yegor256/jekyll-plantuml)](http://www.rultor.com/p/yegor256/jekyll-plantuml)
+[![We recommend RubyMine](https://www.elegantobjects.org/rubymine.svg)](https://www.jetbrains.com/ruby/)
+
 [![rake](https://github.com/yegor256/jekyll-plantuml/actions/workflows/rake.yml/badge.svg)](https://github.com/yegor256/jekyll-plantuml/actions/workflows/rake.yml)
 [![Gem Version](https://badge.fury.io/rb/jekyll-plantuml.svg)](http://badge.fury.io/rb/jekyll-plantuml)
+[![Test Coverage](https://img.shields.io/codecov/c/github/yegor256/jekyll-plantuml.svg)](https://codecov.io/github/yegor256/jekyll-plantuml?branch=master)
 
 Install it first: