diff --git a/src/cron.js b/src/cron.js
new file mode 100644
index 0000000..ab71740
--- /dev/null
+++ b/src/cron.js
@@ -0,0 +1,10 @@
+const { UpdateCategoriesUseCase } = require('./use-cases/update-categories-use-case')
+
+const updateCategories = new UpdateCategoriesUseCase()
+
+module.exports = async function cron() {
+  const oneDay = 1000 * 60 * 60 * 24
+  setImmediate(() => {
+    updateCategories.execute()
+  }, oneDay)
+}
diff --git a/src/server.js b/src/server.js
index f46dec7..99b9e34 100644
--- a/src/server.js
+++ b/src/server.js
@@ -1,11 +1,15 @@
 require('dotenv').config()
 
 const dgram = require('dgram');
-const server = dgram.createSocket('udp4');
 const app = require('./app')
+const cron = require('./cron')
+
+cron()
 
 const PORT = process.env.PORT 
 
+const server = dgram.createSocket('udp4');
+
 server.on('error', (err) => {
   console.log(`Server error:\n${err.stack}`);
   server.close();
diff --git a/src/use-cases/update-categories-use-case.js b/src/use-cases/update-categories-use-case.js
new file mode 100644
index 0000000..df40dfc
--- /dev/null
+++ b/src/use-cases/update-categories-use-case.js
@@ -0,0 +1,20 @@
+const { exec } = require("node:child_process")
+
+class UpdateCategoriesUseCase {
+  execute() {
+    return new Promise((_, reject) => {
+      exec(`bin/gcf1dbmng.sh etc urldb_update`, { cwd: '/usr/local/gcf1' }, (error, stdout, stderr) => {
+        if (error) {
+          console.error(error);
+          reject(error);
+          return;
+        }
+
+        console.log(stdout)
+      });
+    });
+  }
+}
+
+module.exports = { UpdateCategoriesUseCase }
+