diff --git a/Dockerfile b/Dockerfile
index 5914f14..d7f79a2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ RUN a2enmod rewrite
 
 RUN docker-php-ext-install pdo_mysql && docker-php-ext-enable pdo_mysql
 RUN docker-php-ext-install opcache && docker-php-ext-enable opcache
-RUN install-php-extensions redis mbstring && docker-php-ext-enable redis mbstring
+RUN install-php-extensions redis && docker-php-ext-enable redis
 RUN docker-php-ext-install exif && docker-php-ext-enable exif
 RUN docker-php-ext-install gmp && docker-php-ext-enable gmp
 RUN docker-php-ext-install mysqli && docker-php-ext-enable mysqli