diff --git a/package.json b/package.json
index 71250da..9e902a9 100644
--- a/package.json
+++ b/package.json
@@ -40,10 +40,10 @@
   "homepage": "https://github.com/NoriSte/nprr#readme",
   "devDependencies": {
     "@semantic-release/npm": "7.0.5",
-    "@stryker-mutator/core": "3.0.2",
-    "@stryker-mutator/html-reporter": "3.0.2",
-    "@stryker-mutator/javascript-mutator": "3.0.2",
-    "@stryker-mutator/jest-runner": "3.0.2",
+    "@stryker-mutator/core": "3.1.0",
+    "@stryker-mutator/html-reporter": "3.1.0",
+    "@stryker-mutator/javascript-mutator": "3.1.0",
+    "@stryker-mutator/jest-runner": "3.1.0",
     "coveralls": "3.0.11",
     "cz-conventional-changelog": "3.1.0",
     "jest": "25.2.3",