diff --git a/.mocharc.json b/.mocharc.json
index b111ee1a..1cea1217 100644
--- a/.mocharc.json
+++ b/.mocharc.json
@@ -1,4 +1,5 @@
 {
   "reporter": "dot",
-  "require": ["tsx"]
+  "extension": "ts",
+  "import": "tsx/esm"
 }
diff --git a/.nvmrc b/.nvmrc
index 8ddbc0c6..60495ee0 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-v18.16.0
+v18.19.1
diff --git a/package.json b/package.json
index 8e30fd22..210e37b0 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "typedoc": "typedoc",
     "circular": "madge --circular --extensions ts src/index.ts",
     "test": "npm run -s test:backend",
-    "test:backend": "mocha --extension ts --reporter spec  --recursive src/backend/tests/**/*.test.ts",
+    "test:backend": "mocha --reporter spec --recursive src/backend/tests/**/*.test.ts",
     "fileEndings": "jscodeshift --transformFrom js --transformTo none --importTypes relative --extensions=ts --parser tsx --transform codeshift/transform.ts src/backend",
     "dev": "APP_VERSION=$npm_package_version nodemon -w src/backend -x tsx src/backend/index.ts",
     "start": "APP_VERSION=$npm_package_version NODE_ENV=production tsx src/backend/index.ts",