diff --git a/tools/src/tester/TestRunner.ts b/tools/src/tester/TestRunner.ts
index 0c0f3c4ff..0b197d648 100644
--- a/tools/src/tester/TestRunner.ts
+++ b/tools/src/tester/TestRunner.ts
@@ -64,10 +64,9 @@ export default class TestRunner {
   #collect_story_files (folder: string, file: string, prefix: string): StoryFile[] {
     const path = file === '' ? folder : `${folder}/${file}`
     const next_prefix = prefix === '' ? file : `${prefix}/${file}`
-    if (fs.statSync(path).isFile()) {
-      if (!path.endsWith('.yaml')) {
-        return []
-      }
+    if (file.startsWith('.') || file == 'docker-compose.yml') {
+      return []
+    } else if (fs.statSync(path).isFile()) {
       const story: Story = read_yaml(path)
       return [{
         display_path: next_prefix === '' ? basename(path) : next_prefix,
diff --git a/tools/tests/tester/fixtures/stories/.ignore-dot-file b/tools/tests/tester/fixtures/stories/.ignore-dot-file
new file mode 100644
index 000000000..11c2f4cfd
--- /dev/null
+++ b/tools/tests/tester/fixtures/stories/.ignore-dot-file
@@ -0,0 +1 @@
+Hidden file, ignored.
\ No newline at end of file
diff --git a/tools/tests/tester/fixtures/stories/docker-compose.yml b/tools/tests/tester/fixtures/stories/docker-compose.yml
new file mode 100644
index 000000000..a47276c99
--- /dev/null
+++ b/tools/tests/tester/fixtures/stories/docker-compose.yml
@@ -0,0 +1 @@
+# A docker-compose.yml file, ignored.
diff --git a/tools/tests/tester/fixtures/stories/ignore.wrong.extension b/tools/tests/tester/fixtures/stories/ignore.wrong.extension
deleted file mode 100644
index a649676ae..000000000
--- a/tools/tests/tester/fixtures/stories/ignore.wrong.extension
+++ /dev/null
@@ -1 +0,0 @@
-Not a .yaml file, should be ignored