diff --git a/repo-refresh/repo-refresh.service b/repo-refresh/repo-refresh.service
new file mode 100644
index 0000000..07e8c1d
--- /dev/null
+++ b/repo-refresh/repo-refresh.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Check for package update
+ConditionACPower=true
+
+[Service]
+Type=oneshot
+ExecStart=/usr/libexec/repo-refresh.sh
diff --git a/repo-refresh/repo-refresh.sh b/repo-refresh/repo-refresh.sh
new file mode 100755
index 0000000..9efbb43
--- /dev/null
+++ b/repo-refresh/repo-refresh.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+if command -v oma > /dev/null; then
+    oma refresh --no-progress
+else
+    apt update
+fi
diff --git a/repo-refresh/repo-refresh.timer b/repo-refresh/repo-refresh.timer
new file mode 100644
index 0000000..fe9ae30
--- /dev/null
+++ b/repo-refresh/repo-refresh.timer
@@ -0,0 +1,11 @@
+[Unit]
+Description=Check for package updates
+
+[Timer]
+OnCalendar=*-*-* 6,18:00
+RandomizedDelaySec=12h
+AccuracySec=1h
+Persistent=true
+
+[Install]
+WantedBy=timers.target
\ No newline at end of file