diff --git a/filesystem/vbmeta.go b/filesystem/vbmeta.go
index d468186..5f51d34 100644
--- a/filesystem/vbmeta.go
+++ b/filesystem/vbmeta.go
@@ -173,6 +173,8 @@
 	algorithm := proptools.StringDefault(v.properties.Algorithm, "SHA256_RSA4096")
 	cmd.FlagWithArg("--algorithm ", algorithm)
 
+	cmd.FlagWithArg("--padding_size ", "4096")
+
 	cmd.FlagWithArg("--rollback_index ", v.rollbackIndexCommand(ctx))
 	ril := proptools.IntDefault(v.properties.Rollback_index_location, 0)
 	if ril < 0 {