diff --git a/test/filters/browser_tests-windows.filter b/test/filters/browser_tests-windows.filter
index 48d992b78d3..38de960fe44 100644
--- a/test/filters/browser_tests-windows.filter
+++ b/test/filters/browser_tests-windows.filter
@@ -72,7 +72,6 @@
 -PersistentBackground/ExtensionWebRequestApiTestWithContextType.WebRequestRedirectsWorkers/BackgroundResourceFetchEnabled
 -ServiceWorker/ExtensionWebRequestApiTestWithContextType.WebRequestRedirectsWorkers/BackgroundResourceFetchDisabled
 -ServiceWorker/ExtensionWebRequestApiTestWithContextType.WebRequestRedirectsWorkers/BackgroundResourceFetchEnabled
--UpdateMetricsProviderBrowserTest.RunInBackground
 
 # This test fails because we modify the Profile Picker UI to skip the initial
 # screen and the tests ends up creating 2 profiles instead of the intended one.
diff --git a/test/filters/browser_tests.filter b/test/filters/browser_tests.filter
index 2d809b7a4e1..d392dce1108 100644
--- a/test/filters/browser_tests.filter
+++ b/test/filters/browser_tests.filter
@@ -3608,3 +3608,10 @@
 # Not disabled by Chromium. No Brave chromium_src modifications in this area.
 # https://github.com/brave/brave-browser/issues/54104
 -SensitivePaymentRedactionMultiSourcePageContextFetcherBrowserTest.BasicRedactionInIframe
+
+# Chromium test: upstream flake. The globally registered UpdateMetricsProvider
+# may record histogram samples during browser startup (e.g. via initial
+# stability log). The test's histogram_tester_ starts at construction before
+# startup, so it captures stray samples and ExpectUniqueSample fails.
+# https://github.com/brave/brave-browser/issues/54247
+-UpdateMetricsProviderBrowserTest.RunInBackground