diff --git a/fixture/fixture-password-protected.xlsx b/fixture/fixture-password-protected.xlsx
new file mode 100644
index 00000000..263dde79
Binary files /dev/null and b/fixture/fixture-password-protected.xlsx differ
diff --git a/test.js b/test.js
index 7ce63c79..08b7de3b 100644
--- a/test.js
+++ b/test.js
@@ -262,6 +262,7 @@ const falsePositives = {
 
 // Known failing fixture
 const failingFixture = new Set([
+	'fixture-password-protected',
 ]);
 
 async function checkBufferLike(t, type, bufferLike) {