diff --git a/developer/src/server/build.sh b/developer/src/server/build.sh
index 44cdbe1ca7..7e47d4f663 100755
--- a/developer/src/server/build.sh
+++ b/developer/src/server/build.sh
@@ -125,11 +125,19 @@ function installer_server() {
   cp -R "$PRODBUILDTEMP"/* "$KEYMAN_ROOT/developer/bin/server/"
   rm -rf "$PRODBUILDTEMP"
 }
+
+function test_server() {
+  # eslint .
+  tsc --build test
+  # c8 --reporter=lcov --reporter=text
+  mocha
+}
+
 builder_run_action clean:server        clean_server
 builder_run_action configure:server    configure_server
 builder_run_action build:server        build_server
 builder_run_action build:addins        build_addins
-builder_run_action test:server         mocha
+builder_run_action test:server         test_server
 # builder_run_action test:addins       # no op
 builder_run_action installer:server    installer_server
 
diff --git a/developer/src/server/package.json b/developer/src/server/package.json
index 6d23e11bfb..fbba345439 100644
--- a/developer/src/server/package.json
+++ b/developer/src/server/package.json
@@ -28,7 +28,7 @@
     "@types/express": "^4.17.13",
     "@types/mocha": "^9.1.0",
     "@types/multer": "^1.4.7",
-    "@types/node": "^17.0.0",
+    "@types/node": "^20.4.1",
     "@types/ws": "^8.2.2",
     "chai": "^4.3.4",
     "copyfiles": "^2.4.1",
@@ -39,6 +39,6 @@
   },
   "mocha": {
     "require": "ts-node/register",
-    "spec": "**/*.test.ts"
+    "spec": "build/**/*.test.js"
   }
 }
diff --git a/developer/src/server/test/tsconfig.json b/developer/src/server/test/tsconfig.json
new file mode 100644
index 0000000000..e25eb9fb3f
--- /dev/null
+++ b/developer/src/server/test/tsconfig.json
@@ -0,0 +1,16 @@
+{
+  "extends": "../../../../tsconfig.esm-base.json",
+
+  "compilerOptions": {
+      "rootDir": ".",
+      "rootDirs": ["./", "../src/"],
+      "outDir": "../build/test",
+      "baseUrl": ".",
+    },
+  "include": [
+      "**/*.test.ts"
+  ],
+  "references": [
+      { "path": "../" },
+    ]
+}
\ No newline at end of file
diff --git a/developer/src/server/src/version-data.test.ts b/developer/src/server/test/version-data.test.ts
similarity index 97%
rename from developer/src/server/src/version-data.test.ts
rename to developer/src/server/test/version-data.test.ts
index 9f7ebd385f..74762b7d7f 100644
--- a/developer/src/server/src/version-data.test.ts
+++ b/developer/src/server/test/version-data.test.ts
@@ -1,8 +1,6 @@
 import {assert} from 'chai';
 import 'mocha';
-
-import { extractVersionData } from './version-data.js';
-
+import { extractVersionData } from '../src/version-data.js';
 
 describe('extractVersionData', function() {
   it('should parse version strings', function() {
diff --git a/package-lock.json b/package-lock.json
index 405d2154cf..75cab78dd2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2654,7 +2654,7 @@
         "@types/express": "^4.17.13",
         "@types/mocha": "^9.1.0",
         "@types/multer": "^1.4.7",
-        "@types/node": "^17.0.0",
+        "@types/node": "^20.4.1",
         "@types/ws": "^8.2.2",
         "chai": "^4.3.4",
         "copyfiles": "^2.4.1",
@@ -2674,9 +2674,10 @@
       "license": "MIT"
     },
     "developer/src/server/node_modules/@types/node": {
-      "version": "17.0.45",
-      "dev": true,
-      "license": "MIT"
+      "version": "20.8.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-20.8.2.tgz",
+      "integrity": "sha512-Vvycsc9FQdwhxE3y3DzeIxuEJbWGDsnrxvMADzTDF/lcdR9/K+AQIeAghTQsHtotg/q0j3WEOYS/jQgSdWue3w==",
+      "dev": true
     },
     "developer/src/server/node_modules/busboy": {
       "version": "1.6.0",