diff --git a/Dockerfile b/Dockerfile
index 88e89a600163c7c4ab1d386b0507edd8af8cb64c..21d064f323b2f5db863497d5467a853abea43d7c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,7 @@ FROM alpine:latest
 # |--------------------------------------------------------------------------
 RUN apk update && \
     apk upgrade && \
-    apk add apache2 php8-apache2 php8-mysqli curl && \
+    apk add apache2 php8-apache2 php8-mysqli php8-mbstring curl && \
     rm /var/www/localhost/htdocs/ -R
 
 # |--------------------------------------------------------------------------