diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..017106c
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "protolib"]
+	path = protolib
+	url = https://github.com/USNavalResearchLaboratory/protolib.git
diff --git a/protolib b/protolib
new file mode 160000
index 0000000..0952def
--- /dev/null
+++ b/protolib
@@ -0,0 +1 @@
+Subproject commit 0952def39217dd0e50360221f1d4f2fa8cac488e