diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..9ceeddc
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "libs/olm"]
+	path = libs/olm
+	url = https://gitlab.matrix.org/matrix-org/olm.git
diff --git a/libs/olm b/libs/olm
new file mode 160000
index 0000000..bcb89bc
--- /dev/null
+++ b/libs/olm
@@ -0,0 +1 @@
+Subproject commit bcb89bcc243688f063a059b8fd7afd220588efd6