diff --git a/.travis.yml b/.travis.yml
index ec9783c..10a7c09 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,7 +29,7 @@ install:
 - export COLUMNS=120
 - composer show
 script:
-- if [[ $TEST_COVERAGE == 'true' ]]; then composer test-coverage ; else composer test ; fi
+- if [[ $TEST_COVERAGE == 'true' ]]; then composer test-coverage && composer test-infection ; else composer test ; fi
 - if [[ $CS_CHECK == 'true' ]]; then composer cs-check ; fi
 - if [[ $PHPSTAN == 'true' ]]; then composer phpstan ; fi
 after_script:
diff --git a/composer.json b/composer.json
index f04fe12..108b3d1 100644
--- a/composer.json
+++ b/composer.json
@@ -48,6 +48,7 @@
     "cs-fix": "vendor/bin/phpcbf",
     "test": "vendor/bin/phpunit --colors=always",
     "phpstan": "vendor/bin/phpstan analyse",
+    "test-infection": "vendor/bin/infection --threads=4",
     "test-coverage": "vendor/bin/phpunit --colors=always --coverage-clover clover.xml",
     "upload-coverage": "vendor/bin/php-coveralls -v"
   }
diff --git a/infection.json.dist b/infection.json.dist
index 5668e43..b507891 100644
--- a/infection.json.dist
+++ b/infection.json.dist
@@ -7,8 +7,8 @@
     },
     "logs": {
         "text": "infection-log.txt",
-         "badge": {
-             "branch": "master"
-         }
+        "badge": {
+            "branch": "master"
+        }
     }
 }
\ No newline at end of file