diff --git a/install-crontab.sh b/install-crontab.sh
new file mode 100755
index 0000000..47c220c
--- /dev/null
+++ b/install-crontab.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+# Install crontab to run update script
+
+SCRIPT_DIR="$(builtin cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
+
+(crontab -l 2>/dev/null; echo "*/5 * * * * $SCRIPT_DIR/update.sh") | crontab -
diff --git a/update.exs b/update.exs
index e0c367a..bc9ba0d 100644
--- a/update.exs
+++ b/update.exs
@@ -6,7 +6,7 @@ defmodule Instances do
 
   def init() do
     File.rename(@update_file, "#{@update_file}-prev")
-    update
+    update()
   end
 
   def request(url) do
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..1ab0d52
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+SCRIPT_DIR="$(builtin cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
+
+cd "$SCRIPT_DIR"
+mix run update.exs