diff --git a/Sources/php_script/Dockerfile b/Sources/php_script/Dockerfile
index f9e352b..91717d5 100644
--- a/Sources/php_script/Dockerfile
+++ b/Sources/php_script/Dockerfile
@@ -1,3 +1,3 @@
 FROM php:8.1-apache
-RUN apt-get install -y php-mysqli
+RUN apt-get update && apt-get install -y php-mysqli
 COPY ./script /var/www/html