diff --git a/.gitmodules b/.gitmodules
index 7ffe66abe4d5b0d889b112261963e8e2db013e52..122f2d69b7a352332d1dc842841fd781144bff5d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,6 +4,7 @@
 [submodule "tarantool-sys"]
 	path = tarantool-sys
 	url = ../../tarantool.git
+	branch = picodata-submodule
 	ignore = dirty
 [submodule "vshard"]
 	path = vshard
diff --git a/tarantool-sys b/tarantool-sys
index f7cb4a9c314ef94882279e24c59b91a9dfaaf1b2..783c6c81bb66c9a062efca2eb8b05a084ba37978 160000
--- a/tarantool-sys
+++ b/tarantool-sys
@@ -1 +1 @@
-Subproject commit f7cb4a9c314ef94882279e24c59b91a9dfaaf1b2
+Subproject commit 783c6c81bb66c9a062efca2eb8b05a084ba37978