diff --git a/.gitmodules b/.gitmodules
index 8b8a6d3..dd22239 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,8 +6,8 @@
 	url = https://github.com/nervosnetwork/ckb-c-stdlib.git
 [submodule "deps/ckb-c-stdlib-20210801"]
 	path = deps/ckb-c-stdlib-20210801
-	url = https://github.com/XuJiandong/ckb-c-stdlib.git
-	branch = ckb-identity
+	url = https://github.com/nervosnetwork/ckb-c-stdlib.git
+	branch = master
 [submodule "deps/ckb-c-stdlib-20210713"]
 	path = deps/ckb-c-stdlib-20210713
 	url = https://github.com/nervosnetwork/ckb-c-stdlib.git
diff --git a/deps/ckb-c-stdlib-20210801 b/deps/ckb-c-stdlib-20210801
index 62024af..20578df 160000
--- a/deps/ckb-c-stdlib-20210801
+++ b/deps/ckb-c-stdlib-20210801
@@ -1 +1 @@
-Subproject commit 62024af5a13d07c748b92618aee4c526e4966523
+Subproject commit 20578dfb092b3b3761df755395e20ec142a83d6e