diff --git a/packages/util/testem.js b/packages/util/testem.js
index aa5f6a7a8..291e8842f 100644
--- a/packages/util/testem.js
+++ b/packages/util/testem.js
@@ -1,2 +1,22 @@
-const { testemConfig } = require('@embroider/test-support/testem-config');
-module.exports = testemConfig();
+module.exports = {
+  test_page: 'tests/index.html?hidepassed',
+  disable_watching: true,
+  launch_in_ci: ['Chrome'],
+  launch_in_dev: ['Chrome'],
+  browser_start_timeout: 90,
+  browser_args: {
+    Chrome: {
+      ci: [
+        // --no-sandbox is needed when running Chrome inside a container
+        process.env.CI ? '--no-sandbox' : null,
+        '--headless',
+        '--disable-dev-shm-usage',
+        '--disable-software-rasterizer',
+        '--mute-audio',
+        '--remote-debugging-port=0',
+        '--window-size=1440,900',
+        `--crash-dumps-dir=${process.env.TMPDIR}`,
+      ].filter(Boolean),
+    },
+  },
+};
diff --git a/test-packages/sample-transforms/testem.js b/test-packages/sample-transforms/testem.js
index aa5f6a7a8..291e8842f 100644
--- a/test-packages/sample-transforms/testem.js
+++ b/test-packages/sample-transforms/testem.js
@@ -1,2 +1,22 @@
-const { testemConfig } = require('@embroider/test-support/testem-config');
-module.exports = testemConfig();
+module.exports = {
+  test_page: 'tests/index.html?hidepassed',
+  disable_watching: true,
+  launch_in_ci: ['Chrome'],
+  launch_in_dev: ['Chrome'],
+  browser_start_timeout: 90,
+  browser_args: {
+    Chrome: {
+      ci: [
+        // --no-sandbox is needed when running Chrome inside a container
+        process.env.CI ? '--no-sandbox' : null,
+        '--headless',
+        '--disable-dev-shm-usage',
+        '--disable-software-rasterizer',
+        '--mute-audio',
+        '--remote-debugging-port=0',
+        '--window-size=1440,900',
+        `--crash-dumps-dir=${process.env.TMPDIR}`,
+      ].filter(Boolean),
+    },
+  },
+};
diff --git a/test-packages/support/testem-config.ts b/test-packages/support/testem-config.ts
deleted file mode 100644
index 9ba831481..000000000
--- a/test-packages/support/testem-config.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-export function testemConfig() {
-  return {
-    test_page: 'tests/index.html?hidepassed',
-    disable_watching: true,
-    launch_in_ci: ['Chrome'],
-    launch_in_dev: ['Chrome'],
-    browser_start_timeout: 90,
-    browser_args: {
-      Chrome: {
-        ci: [
-          // --no-sandbox is needed when running Chrome inside a container
-          process.env.CI ? '--no-sandbox' : null,
-          '--headless',
-          '--disable-dev-shm-usage',
-          '--disable-software-rasterizer',
-          '--mute-audio',
-          '--remote-debugging-port=0',
-          '--window-size=1440,900',
-          `--crash-dumps-dir=${process.env.TMPDIR}`,
-        ].filter(Boolean),
-      },
-    },
-  };
-}