diff --git a/Dockerfile b/Dockerfile
index 6788887..9aa8116 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.0.6-fpm-buster
+FROM php:fpm-bullseye
 
 # Install prerequisites
 RUN apt-get update && apt-get -y install wget git npm curl zip
@@ -8,7 +8,7 @@ RUN apt-get install -y libpq-dev \
 
 # Download composer
 RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" && \
-    php -r "if (hash_file('sha384', 'composer-setup.php') === '756890a4488ce9024fc62c56153228907f1545c228516cbf63f885e036d37e9a59d27d63f46af1d4d07ee0f76181c7d3') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" && \
+    php -r "if (hash_file('sha384', 'composer-setup.php') === '906a84df04cea2aa72f40b5f787e49f22d4c2f19492ac310e8cba5b96ac8b64115ac402c8cd292b8a03482574915d1a8') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;" && \
     php composer-setup.php && \
     php -r "unlink('composer-setup.php');"