diff --git a/.gitmodules b/.gitmodules
index 081a404135..1d925674a1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -6,3 +6,7 @@
 	path = vendor/postgres-v15
 	url = https://github.com/neondatabase/postgres.git
 	branch = REL_15_STABLE_neon
+[submodule "vendor/postgres-v16"]
+	path = vendor/postgres-v16
+	url = https://github.com/neondatabase/postgres.git
+	branch = REL_16_STABLE_neon
diff --git a/vendor/postgres-v16 b/vendor/postgres-v16
new file mode 160000
index 0000000000..19508f4763
--- /dev/null
+++ b/vendor/postgres-v16
@@ -0,0 +1 @@
+Subproject commit 19508f4763b6e55baae788af000ee47e74d24370