diff --git a/src/test-files-finder.ts b/src/test-files-finder.ts
index dfa05ed..59b1834 100644
--- a/src/test-files-finder.ts
+++ b/src/test-files-finder.ts
@@ -7,6 +7,11 @@ export class TestFilesFinder {
   public static allTestFiles(): TestFile[] {
     return glob
       .sync(EnvConfig.testFilePattern)
+      .filter((testFilePath: string) => {
+        // ignore test file paths inside node_modules because it's default Jest behaviour
+        // https://jestjs.io/docs/en/22.2/configuration#testpathignorepatterns-array-string
+        return !testFilePath.match(/node_modules/);
+      })
       .map((testFilePath: string) => ({ path: testFilePath }));
   }
 }