diff --git a/test/filters/browser_tests.filter b/test/filters/browser_tests.filter
index aaa1576278c1..a3afc1a656f8 100644
--- a/test/filters/browser_tests.filter
+++ b/test/filters/browser_tests.filter
@@ -981,6 +981,7 @@
 -CommerceInternalsBrowserTest.InternalsPageOpen
 
 # Flaky upstream.
+-All/PDFExtensionScrollTest.WithPageDownUp/0
 -All/PDFExtensionScrollTest.WithSpace/0
 -ExtensionWindowCreateTest.AcceptState
 -FirstRunFlowControllerDiceBrowserTest.ButtonsAreDisabledOnClickAndEnabledOnNavigateBack