diff --git a/.gitmodules b/.gitmodules
index 800af32..2e3e001 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -119,3 +119,6 @@
 [submodule "fail2ban"]
 	path = fail2ban
 	url = https://gitlab.archlinux.org/archlinux/packaging/packages/fail2ban.git
+[submodule "prometheus-x509-certificate-exporter"]
+	path = prometheus-x509-certificate-exporter
+	url = https://aur.archlinux.org/prometheus-x509-certificate-exporter.git
diff --git a/prometheus-x509-certificate-exporter b/prometheus-x509-certificate-exporter
new file mode 160000
index 0000000..02b500c
--- /dev/null
+++ b/prometheus-x509-certificate-exporter
@@ -0,0 +1 @@
+Subproject commit 02b500c76f2e27fe1a9a0bbdf4ab7896f03c0dff