diff --git a/gruntfile.js b/gruntfile.js
index 7332d553..909bff27 100644
--- a/gruntfile.js
+++ b/gruntfile.js
@@ -162,7 +162,7 @@ module.exports = function(grunt) {
 	});
 
 	grunt.registerTask('update', 'Upgrade database to newest version.', function() {
-		exec('php scripts/upgrade.php');
+		exec('php scripts/upgrade');
 	});
 	grunt.registerTask('upgrade', ['update']);
 
diff --git a/scripts/cron-globals.php b/scripts/cron-globals
similarity index 100%
rename from scripts/cron-globals.php
rename to scripts/cron-globals
diff --git a/scripts/cron-stats.php b/scripts/cron-stats
similarity index 100%
rename from scripts/cron-stats.php
rename to scripts/cron-stats
diff --git a/scripts/find-dead-posts.php b/scripts/find-dead-posts
similarity index 100%
rename from scripts/find-dead-posts.php
rename to scripts/find-dead-posts
diff --git a/scripts/test-email.php b/scripts/test-email
similarity index 100%
rename from scripts/test-email.php
rename to scripts/test-email
diff --git a/scripts/thumbnails.php b/scripts/thumbnails
similarity index 100%
rename from scripts/thumbnails.php
rename to scripts/thumbnails
diff --git a/scripts/upgrade.php b/scripts/upgrade
similarity index 100%
rename from scripts/upgrade.php
rename to scripts/upgrade