diff --git a/package.json b/package.json
index 41bdafa..261f238 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "@rollup/plugin-commonjs": "^25.0.7",
     "@rollup/plugin-node-resolve": "^15.2.3",
     "@rollup/plugin-terser": "^0.4.4",
-    "chai": "^4.4.0",
+    "chai": "^5.0.0",
     "diagram-js": "^14.0.0",
     "eslint": "^8.56.0",
     "eslint-plugin-bpmn-io": "^1.0.0",
@@ -46,7 +46,7 @@
     "npm-run-all2": "^6.0.0",
     "puppeteer": "^22.0.0",
     "rollup": "^4.9.4",
-    "sinon": "^17.0.1",
+    "sinon": "^18.0.0",
     "sinon-chai": "^3.7.0",
     "webpack": "^5.89.0"
   },