diff --git a/composer.json b/composer.json
index 8be0e37a..809ccfbb 100644
--- a/composer.json
+++ b/composer.json
@@ -133,9 +133,9 @@
         "test:cli:pretty": "GENERATE_COVERAGE=pretty composer test:cli",
         "infect:ci:base": "infection --threads=max --only-covered --only-covering-test-cases --skip-initial-tests",
         "infect:ci:unit": "@infect:ci:base --coverage=build/coverage-unit --min-msi=84",
-        "infect:ci:db": "@infect:ci:base --coverage=build/coverage-db --min-msi=95 --configuration=infection-db.json",
-        "infect:ci:api": "@infect:ci:base --coverage=build/coverage-api --min-msi=80 --configuration=infection-api.json",
-        "infect:ci:cli": "@infect:ci:base --coverage=build/coverage-cli --min-msi=80 --configuration=infection-cli.json",
+        "infect:ci:db": "@infect:ci:base --coverage=build/coverage-db --min-msi=95 --configuration=infection-db.json5",
+        "infect:ci:api": "@infect:ci:base --coverage=build/coverage-api --min-msi=80 --configuration=infection-api.json5",
+        "infect:ci:cli": "@infect:ci:base --coverage=build/coverage-cli --min-msi=80 --configuration=infection-cli.json5",
         "infect:ci": "@parallel infect:ci:unit infect:ci:db infect:ci:api infect:ci:cli",
         "infect:test": [
             "@parallel test:unit:ci test:db:sqlite:ci test:api:ci",
diff --git a/infection-api.json b/infection-api.json
deleted file mode 100644
index 27453018..00000000
--- a/infection-api.json
+++ /dev/null
@@ -1,24 +0,0 @@
-{
-    "source": {
-        "directories": [
-            "module/*/src"
-        ]
-    },
-    "timeout": 5,
-    "logs": {
-        "text": "build/infection-api/infection-log.txt",
-        "html": "build/infection-api/infection-log.html",
-        "summary": "build/infection-api/summary-log.txt",
-        "debug": "build/infection-api/debug-log.txt"
-    },
-    "tmpDir": "build/infection-api/temp",
-    "phpUnit": {
-        "configDir": "."
-    },
-    "testFrameworkOptions": "--configuration=phpunit-api.xml",
-    "mutators": {
-        "@default": true,
-        "IdenticalEqual": false,
-        "NotIdenticalNotEqual": false
-    }
-}
diff --git a/infection-api.json5 b/infection-api.json5
new file mode 100644
index 00000000..e2cd08dc
--- /dev/null
+++ b/infection-api.json5
@@ -0,0 +1,24 @@
+{
+    source: {
+        directories: [
+            'module/*/src'
+        ]
+    },
+    timeout: 5,
+    logs: {
+        text: 'build/infection-api/infection-log.txt',
+        html: 'build/infection-api/infection-log.html',
+        summary: 'build/infection-api/summary-log.txt',
+        debug: 'build/infection-api/debug-log.txt'
+    },
+    tmpDir: 'build/infection-api/temp',
+    phpUnit: {
+        configDir: '.'
+    },
+    testFrameworkOptions: '--configuration=phpunit-api.xml',
+    mutators: {
+        '@default': true,
+        IdenticalEqual: false,
+        NotIdenticalNotEqual: false
+    }
+}
diff --git a/infection-cli.json b/infection-cli.json
deleted file mode 100644
index 60552d11..00000000
--- a/infection-cli.json
+++ /dev/null
@@ -1,24 +0,0 @@
-{
-    "source": {
-        "directories": [
-            "module/*/src"
-        ]
-    },
-    "timeout": 5,
-    "logs": {
-        "text": "build/infection-cli/infection-log.txt",
-        "html": "build/infection-cli/infection-log.html",
-        "summary": "build/infection-cli/summary-log.txt",
-        "debug": "build/infection-cli/debug-log.txt"
-    },
-    "tmpDir": "build/infection-cli/temp",
-    "phpUnit": {
-        "configDir": "."
-    },
-    "testFrameworkOptions": "--configuration=phpunit-cli.xml",
-    "mutators": {
-        "@default": true,
-        "IdenticalEqual": false,
-        "NotIdenticalNotEqual": false
-    }
-}
diff --git a/infection-cli.json5 b/infection-cli.json5
new file mode 100644
index 00000000..cc809fba
--- /dev/null
+++ b/infection-cli.json5
@@ -0,0 +1,24 @@
+{
+    source: {
+        directories: [
+            'module/*/src'
+        ]
+    },
+    timeout: 5,
+    logs: {
+        text: 'build/infection-cli/infection-log.txt',
+        html: 'build/infection-cli/infection-log.html',
+        summary: 'build/infection-cli/summary-log.txt',
+        debug: 'build/infection-cli/debug-log.txt'
+    },
+    tmpDir: 'build/infection-cli/temp',
+    phpUnit: {
+        configDir: '.'
+    },
+    testFrameworkOptions: '--configuration=phpunit-cli.xml',
+    mutators: {
+        '@default': true,
+        IdenticalEqual: false,
+        NotIdenticalNotEqual: false
+    }
+}
diff --git a/infection-db.json b/infection-db.json
deleted file mode 100644
index d633cb05..00000000
--- a/infection-db.json
+++ /dev/null
@@ -1,24 +0,0 @@
-{
-    "source": {
-        "directories": [
-            "module/*/src"
-        ]
-    },
-    "timeout": 5,
-    "logs": {
-        "text": "build/infection-db/infection-log.txt",
-        "html": "build/infection-db/infection-log.html",
-        "summary": "build/infection-db/summary-log.txt",
-        "debug": "build/infection-db/debug-log.txt"
-    },
-    "tmpDir": "build/infection-db/temp",
-    "phpUnit": {
-        "configDir": "."
-    },
-    "testFrameworkOptions": "--configuration=phpunit-db.xml",
-    "mutators": {
-        "@default": true,
-        "IdenticalEqual": false,
-        "NotIdenticalNotEqual": false
-    }
-}
diff --git a/infection-db.json5 b/infection-db.json5
new file mode 100644
index 00000000..1f484343
--- /dev/null
+++ b/infection-db.json5
@@ -0,0 +1,24 @@
+{
+    source: {
+        directories: [
+            'module/*/src'
+        ]
+    },
+    timeout: 5,
+    logs: {
+        text: 'build/infection-db/infection-log.txt',
+        html: 'build/infection-db/infection-log.html',
+        summary: 'build/infection-db/summary-log.txt',
+        debug: 'build/infection-db/debug-log.txt'
+    },
+    tmpDir: 'build/infection-db/temp',
+    phpUnit: {
+        configDir: '.'
+    },
+    testFrameworkOptions: '--configuration=phpunit-db.xml',
+    mutators: {
+        '@default': true,
+        IdenticalEqual: false,
+        NotIdenticalNotEqual: false
+    }
+}
diff --git a/infection.json b/infection.json
deleted file mode 100644
index 9a4f7f00..00000000
--- a/infection.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-    "source": {
-        "directories": [
-            "module/*/src"
-        ]
-    },
-    "timeout": 5,
-    "logs": {
-        "text": "build/infection-unit/infection-log.txt",
-        "html": "build/infection-unit/infection-log.html",
-        "summary": "build/infection-unit/summary-log.txt",
-        "debug": "build/infection-unit/debug-log.txt",
-        "stryker": {
-            "report": "develop"
-        }
-    },
-    "tmpDir": "build/infection-unit/temp",
-    "phpUnit": {
-        "configDir": "."
-    },
-    "mutators": {
-        "@default": true,
-        "IdenticalEqual": false,
-        "NotIdenticalNotEqual": false
-    }
-}
diff --git a/infection.json5 b/infection.json5
new file mode 100644
index 00000000..050a08e3
--- /dev/null
+++ b/infection.json5
@@ -0,0 +1,26 @@
+{
+    source: {
+        directories: [
+            'module/*/src'
+        ]
+    },
+    timeout: 5,
+    logs: {
+        text: 'build/infection-unit/infection-log.txt',
+        html: 'build/infection-unit/infection-log.html',
+        summary: 'build/infection-unit/summary-log.txt',
+        debug: 'build/infection-unit/debug-log.txt',
+        stryker: {
+            report: 'develop'
+        }
+    },
+    tmpDir: 'build/infection-unit/temp',
+    phpUnit: {
+        configDir: '.'
+    },
+    mutators: {
+        '@default': true,
+        IdenticalEqual: false,
+        NotIdenticalNotEqual: false
+    }
+}