diff --git a/src/agent.jazz b/src/agent.jazz
index 24c0d97..4da9530 100644
--- a/src/agent.jazz
+++ b/src/agent.jazz
@@ -1,6 +1,6 @@
 from Jade require "crypto_sign/ed25519/amd64/amd64-64-24k/ed25519.jinc"
 
-param int SK_SIZE = 32;
+param int SK_SIZE = 64;
 param int SHARED_MEM_SIZE = 1024;
 param int PRIVATE_MEM_SIZE = 3200;