diff --git a/.gitattributes b/.gitattributes
index df92734..9a77228 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,5 +1,4 @@
 .*                      export-ignore
-infection.json          export-ignore
 Makefile                export-ignore
 phpstan.neon.dist       export-ignore
 phpstan-baseline.neon   export-ignore
diff --git a/Makefile b/Makefile
index 42a0cb2..03173d3 100644
--- a/Makefile
+++ b/Makefile
@@ -16,10 +16,6 @@ lint-composer:
 test: vendor-bin/tools/vendor
 	vendor/bin/phpunit --colors=always
 
-.PHONY: infection
-infection: vendor/bin/infection
-	vendor/bin/infection --threads=4
-
 .PHONY: coverage
 coverage: vendor-bin/tools/vendor
 	vendor/bin/phpunit --colors=always --coverage-clover=build/logs/clover.xml
@@ -56,5 +52,3 @@ check-dependencies: vendor-bin/tools/vendor
 vendor-bin/tools/vendor:
 	composer --working-dir=vendor-bin/tools install
 
-vendor/bin/infection: vendor-bin/tools/vendor
-	wget -O vendor/bin/infection https://github.com/infection/infection/releases/latest/download/infection.phar && chmod +x vendor/bin/infection
diff --git a/infection.json b/infection.json
deleted file mode 100644
index 7a57ff5..0000000
--- a/infection.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-    "timeout": 10,
-    "source": {
-        "directories": [
-            "src"
-        ]
-    },
-    "logs": {
-        "text": "build/infection/infection-log.txt"
-    },
-    "ignoreMsiWithNoMutations": true,
-    "minMsi": 80,
-    "minCoveredMsi": 85
-}