diff --git a/node/Identity.cpp b/node/Identity.cpp
index 298db57b5..db56716a1 100644
--- a/node/Identity.cpp
+++ b/node/Identity.cpp
@@ -131,8 +131,8 @@ bool Identity::fromString(const char *str)
 
 // These are fixed parameters and can't be changed without a new
 // identity type.
-#define ZT_IDENTITY_DERIVEADDRESS_MEMORY 16777216
-#define ZT_IDENTITY_DERIVEADDRESS_ROUNDS 32
+#define ZT_IDENTITY_DERIVEADDRESS_MEMORY 33554432
+#define ZT_IDENTITY_DERIVEADDRESS_ROUNDS 64
 
 Address Identity::deriveAddress(const void *keyBytes,unsigned int keyLen)
 {