diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 00000000..d67c7d91
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "etc/chrony/sources.d/jauderho-nts-servers"]
+	path = etc/chrony/sources.d/jauderho-nts-servers
+	url = https://gist.github.com/2ad0d441760fc5ed69d8d4e2d6b35f8d.git
diff --git a/etc/chrony/sources.d/jauderho-nts-servers b/etc/chrony/sources.d/jauderho-nts-servers
new file mode 160000
index 00000000..fdd2fb32
--- /dev/null
+++ b/etc/chrony/sources.d/jauderho-nts-servers
@@ -0,0 +1 @@
+Subproject commit fdd2fb32525a96c9ec30bc935c2524343c4fbd9a