diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5aa7fcb..d466edf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,3 +9,5 @@ on:
 jobs:
   ci:
     uses: shlinkio/github-actions/.github/workflows/php-lib-ci.yml@main
+    secrets:
+      INFECTION_BADGE_API_KEY: ${{ secrets.INFECTION_BADGE_API_KEY }}
diff --git a/README.md b/README.md
index 5f6fa1d..9aec627 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 [![Build Status](https://img.shields.io/github/workflow/status/shlinkio/shlink-config/Continuous%20integration/main?logo=github&style=flat-square)](https://github.com/shlinkio/shlink-config/actions?query=workflow%3A%22Continuous+integration%22)
 [![Code Coverage](https://img.shields.io/codecov/c/gh/shlinkio/shlink-config/main?style=flat-square)](https://app.codecov.io/gh/shlinkio/shlink-config)
+[![Infection MSI](https://img.shields.io/endpoint?style=flat-square&url=https%3A%2F%2Fbadge-api.stryker-mutator.io%2Fgithub.com%2Fshlinkio%2Fshlink-config%2Fmain)](https://dashboard.stryker-mutator.io/reports/github.com/shlinkio/shlink-config/main)
 [![Latest Stable Version](https://img.shields.io/github/release/shlinkio/shlink-config.svg?style=flat-square)](https://packagist.org/packages/shlinkio/shlink-config)
 [![License](https://img.shields.io/github/license/shlinkio/shlink-config.svg?style=flat-square)](https://github.com/shlinkio/shlink-config/blob/main/LICENSE)
 [![Paypal donate](https://img.shields.io/badge/Donate-paypal-blue.svg?style=flat-square&logo=paypal&colorA=aaaaaa)](https://slnk.to/donate)
diff --git a/infection.json b/infection.json
index b7e7bee..00ce157 100644
--- a/infection.json
+++ b/infection.json
@@ -8,7 +8,10 @@
     "logs": {
         "text": "build/infection/infection-log.txt",
         "summary": "build/infection/summary-log.txt",
-        "debug": "build/infection/debug-log.txt"
+        "debug": "build/infection/debug-log.txt",
+        "badge": {
+            "branch": "main"
+        }
     },
     "tmpDir": "build/infection/temp",
     "phpUnit": {