diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..1688688a
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "3rd/jemalloc"]
+	path = 3rd/jemalloc
+	url = git@github.com:jemalloc/jemalloc.git
diff --git a/3rd/jemalloc b/3rd/jemalloc
new file mode 160000
index 00000000..3541a904
--- /dev/null
+++ b/3rd/jemalloc
@@ -0,0 +1 @@
+Subproject commit 3541a904d6fb949f3f0aea05418ccce7cbd4b705