diff --git a/bin/runTests.sh b/bin/runTests.sh
new file mode 100644
index 00000000..2c6c21e5
--- /dev/null
+++ b/bin/runTests.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -eEuo pipefail
+
+#
+# As of Node 20, the --test parameter does not support globbing, and it does not
+# support variable Windows paths. We also cannot invoke the test runner
+# directly, because while it has an API, there's no way to force it to transpile
+# the Typescript into JavaScript before passing it to the runner.
+#
+# So we're left with this solution, which shells out to Node to list all files
+# that end in *.test.ts (excluding node_modules/), and then execs out to that
+# process. We have to exec so the stderr/stdout and exit code is appropriately
+# fed to the caller.
+#
+
+FILES="$(node -e "process.stdout.write(require('node:fs').readdirSync('./', { recursive: true }).filter((e) => {return e.endsWith('.test.ts') && !e.startsWith('node_modules');}).sort().join(' '));")"
+
+set -x
+exec node --require ts-node/register --test-reporter spec --test ${FILES}
diff --git a/package-lock.json b/package-lock.json
index badddedf..e4c55d71 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "dependencies": {
         "@actions/core": "^1.10.1",
         "@actions/http-client": "^2.2.0",
-        "@google-github-actions/actions-utils": "^0.4.9"
+        "@google-github-actions/actions-utils": "^0.4.10"
       },
       "devDependencies": {
         "@types/node": "^20.9.0",
@@ -130,11 +130,11 @@
       }
     },
     "node_modules/@google-github-actions/actions-utils": {
-      "version": "0.4.9",
-      "resolved": "https://registry.npmjs.org/@google-github-actions/actions-utils/-/actions-utils-0.4.9.tgz",
-      "integrity": "sha512-DRZp7LnPDzCzZ2m//hOO2LB2Kv72Ljzq/33CT+DWSNucTgz4B579TvJyth6uVro9cF9iQ8c6ELmEDg81Oypy7w==",
+      "version": "0.4.10",
+      "resolved": "https://registry.npmjs.org/@google-github-actions/actions-utils/-/actions-utils-0.4.10.tgz",
+      "integrity": "sha512-bvMdDmsjIggEZYFwX5jmZCQVlzkW+hYk9U4+M79PJjnD8lfl4/imCUTRmfSyqZcEdIas8bvmQb2+ObBUYKXAtw==",
       "dependencies": {
-        "yaml": "^2.3.3"
+        "yaml": "^2.3.4"
       }
     },
     "node_modules/@humanwhocodes/config-array": {
diff --git a/package.json b/package.json
index de87d369..9097de9e 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "build": "ncc build -m src/main.ts -o dist/main && ncc build -m src/post.ts -o dist/post",
     "lint": "eslint . --ext .ts,.tsx",
     "format": "prettier --write **/*.ts",
-    "test": " node --require ts-node/register --test **/*.test.ts **/**/*.test.ts"
+    "test": "bash ./bin/runTests.sh"
   },
   "repository": {
     "type": "git",
@@ -25,7 +25,7 @@
   "dependencies": {
     "@actions/core": "^1.10.1",
     "@actions/http-client": "^2.2.0",
-    "@google-github-actions/actions-utils": "^0.4.9"
+    "@google-github-actions/actions-utils": "^0.4.10"
   },
   "devDependencies": {
     "@types/node": "^20.9.0",