diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5e3b20ac..2d77268f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,9 +18,11 @@ on:
   push:
     branches:
       - 'main'
+      - 'release/**/*'
   pull_request:
     branches:
       - 'main'
+      - 'release/**/*'
   workflow_dispatch:
 
 concurrency:
@@ -37,7 +39,7 @@ jobs:
 
       - uses: 'actions/setup-node@v4'
         with:
-          node-version: '20.x'
+          node-version: '16.x'
 
       - name: 'npm build'
         run: 'npm ci && npm run build'
@@ -65,7 +67,7 @@ jobs:
 
       - uses: 'actions/setup-node@v4'
         with:
-          node-version: '20.x'
+          node-version: '16.x'
 
       - name: 'npm build'
         run: 'npm ci && npm run build'
@@ -141,7 +143,7 @@ jobs:
 
       - uses: 'actions/setup-node@v4'
         with:
-          node-version: '20.x'
+          node-version: '16.x'
 
       - name: 'npm build'
         run: 'npm ci && npm run build'
@@ -216,7 +218,7 @@ jobs:
 
       - uses: 'actions/setup-node@v4'
         with:
-          node-version: '20.x'
+          node-version: '16.x'
 
       - name: 'npm build'
         run: 'npm ci && npm run build'
diff --git a/action.yml b/action.yml
index 8773a094..7afd7698 100644
--- a/action.yml
+++ b/action.yml
@@ -186,6 +186,6 @@ branding:
   color: 'blue'
 
 runs:
-  using: 'node20'
+  using: 'node16'
   main: 'dist/main/index.js'
   post: 'dist/post/index.js'
diff --git a/bin/runTests.sh b/bin/runTests.sh
index 2c6c21e5..90838f9a 100644
--- a/bin/runTests.sh
+++ b/bin/runTests.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -eEuo pipefail
+set -eEuxo pipefail
 
 #
 # As of Node 20, the --test parameter does not support globbing, and it does not
@@ -13,7 +13,4 @@ set -eEuo pipefail
 # 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}
+exec node --require ts-node/register --test ./tests/client/credentials_json_client.test.ts ./tests/client/workload_identity_client.test.ts ./tests/utils.test.ts