diff --git a/.gitmodules b/.gitmodules
index a32a53f74..418a93a37 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,7 @@
 [submodule "sdk"]
 	path = sdk
 	url = https://github.com/Penglai-Enclave/penglai-sdk.git
+	branch = master
 [submodule "riscv-qemu"]
 	path = riscv-qemu
 	url = https://github.com/Penglai-Enclave/penglai-qemu.git
diff --git a/sdk b/sdk
index ec441a1d1..3aaaf1c5a 160000
--- a/sdk
+++ b/sdk
@@ -1 +1 @@
-Subproject commit ec441a1d116d665a1b228b9c15d77ca1a1bbf0d9
+Subproject commit 3aaaf1c5a45ef9ead3c46dcdd0addf9bfcec1487