diff --git a/Makefile b/Makefile
index 05ca64d..4029053 100644
--- a/Makefile
+++ b/Makefile
@@ -3,5 +3,7 @@ PREFIX ?= /usr
 build:
 
 install:
-	mkdir -p $(DESTDIR)$(PREFIX)/bin
-	cp unipoly-mlmmj-ldap-sync.rb $(DESTDIR)$(PREFIX)/bin/unipoly-mlmmj-ldap-sync
+	mkdir -p $(DESTDIR)$(PREFIX)/bin /etc /lib/systemd/system
+	install -m755 unipoly-mlmmj-ldap-sync $(DESTDIR)$(PREFIX)/bin/unipoly-mlmmj-ldap-sync
+	install -m644 config.example.com /etc/unipoly-mlmmj-ldap-sync.toml
+	install -m644 unipoly-mlmmj-ldap-sync.service unipoly-mlmmj-ldap-sync.timer /lib/systemd/system
diff --git a/debian/changelog b/debian/changelog
index 53fa052..44fbed9 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+unipoly-mlmmj-ldap-sync (0.2) unstable; urgency=low
+
+  * Add systemd units.
+  * Add default configuration file.
+
+ -- Timothée Floure <timothee.floure@epfl.ch>  Wed, 22 Aug 2018 16:25:00 +0200
+
 unipoly-mlmmj-ldap-sync (0.1) unstable; urgency=low
 
   * Let there be package.
diff --git a/unipoly-mlmmj-ldap-sync.rb b/unipoly-mlmmj-ldap-sync
similarity index 98%
rename from unipoly-mlmmj-ldap-sync.rb
rename to unipoly-mlmmj-ldap-sync
index a522f70..6daf202 100755
--- a/unipoly-mlmmj-ldap-sync.rb
+++ b/unipoly-mlmmj-ldap-sync
@@ -3,7 +3,7 @@
 require 'toml'
 require 'net/ldap'
 
-@configuration_file = "conf.example.toml"
+@configuration_file = "/etc/unipoly-mlmmj-ldap-sync.toml"
 
 def read_configuration(path)
   TOML.load_file(path)
diff --git a/unipoly-mlmmj-ldap-sync.service b/unipoly-mlmmj-ldap-sync.service
new file mode 100644
index 0000000..f82c859
--- /dev/null
+++ b/unipoly-mlmmj-ldap-sync.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Synchronize Unipoly's mailing lists with their LDAP groups
+After=network.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/unipoly-mlmmj-ldap-sync
diff --git a/unipoly-mlmmj-ldap-sync.timer b/unipoly-mlmmj-ldap-sync.timer
new file mode 100644
index 0000000..4ec67c9
--- /dev/null
+++ b/unipoly-mlmmj-ldap-sync.timer
@@ -0,0 +1,9 @@
+[Unit]
+Description=Synchronize Unipoly's mailing lists with their LDAP groups once a day
+
+[Timer]
+OnCalendar=*-*-* 3:00:00
+Persistent=true
+
+[Install]
+WantedBy=timers.target