diff --git a/eth/handler_test.go b/eth/handler_test.go
index e20652d8f..2fdd4e18e 100644
--- a/eth/handler_test.go
+++ b/eth/handler_test.go
@@ -496,7 +496,7 @@ func testCheckpointChallenge(t *testing.T, syncmode downloader.SyncMode, checkpo
 		}
 	}
 	// Wait until the test timeout passes to ensure proper cleanup
-	time.Sleep(syncChallengeTimeout + 100*time.Millisecond)
+	time.Sleep(syncChallengeTimeout + 300*time.Millisecond)
 
 	// Verify that the remote peer is maintained or dropped
 	if drop {
diff --git a/tests/testdata b/tests/testdata
index 7497b116a..b5eb9900e 160000
--- a/tests/testdata
+++ b/tests/testdata
@@ -1 +1 @@
-Subproject commit 7497b116a019beb26215cbea4028df068dea06be
+Subproject commit b5eb9900ee2147b40d3e681fe86efa4fd693959a