diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..9b08815
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,19 @@
+# http://editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+end_of_line = LF
+
+[*.md]
+trim_trailing_whitespace = false
+
+[Makefile]
+indent_style = tab
+
+[*.yml]
+indent_size = 2
diff --git a/.gitignore b/.gitignore
index 0296b57..4992825 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ docs
 phpunit.xml
 psalm.xml
 vendor
+infection.log
diff --git a/Makefile b/Makefile
index 37e9429..b07bb3a 100644
--- a/Makefile
+++ b/Makefile
@@ -4,6 +4,7 @@ help:
 	@echo "  test                           to perform tests."
 	@echo "  coverage                       to perform tests with code coverage."
 	@echo "  phpstan                        to run phpstan"
+	@echo "  infection                      to run infection"
 
 install:
 	composer install
@@ -16,3 +17,8 @@ coverage:
 
 phpstan:
 	php vendor/bin/phpstan analyse
+
+INFECTION_THREADS = $(shell sysctl -n hw.ncpu)
+
+infection:
+	php vendor/bin/infection --threads=$(INFECTION_THREADS)
diff --git a/composer.json b/composer.json
index a692be8..be7b1bb 100644
--- a/composer.json
+++ b/composer.json
@@ -32,6 +32,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^7.5",
-        "phpstan/phpstan": "0.12.56"
+        "phpstan/phpstan": "0.12.56",
+        "infection/infection": "^0.20.2"
     }
 }
diff --git a/infection.json.dist b/infection.json.dist
new file mode 100644
index 0000000..eda367b
--- /dev/null
+++ b/infection.json.dist
@@ -0,0 +1,13 @@
+{
+    "source": {
+        "directories": [
+            "src"
+        ]
+    },
+    "logs": {
+        "text": "infection.log"
+    },
+    "mutators": {
+        "@default": true
+    }
+}
\ No newline at end of file