diff --git a/firmware/.gitignore b/firmware/.gitignore
index 93ac46c..6c69f4c 100644
--- a/firmware/.gitignore
+++ b/firmware/.gitignore
@@ -1 +1,2 @@
 .pioenvs
+.piolibdeps
diff --git a/init_submodules.sh b/init_submodules.sh
new file mode 100755
index 0000000..6bc9e75
--- /dev/null
+++ b/init_submodules.sh
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+git submodule update --init --recursive