diff --git a/dockerfiles/Dockerfile.ubuntu b/dockerfiles/Dockerfile.ubuntu
index be59d6656..f9aa47507 100644
--- a/dockerfiles/Dockerfile.ubuntu
+++ b/dockerfiles/Dockerfile.ubuntu
@@ -8,7 +8,7 @@ COPY package.json ./
 RUN npm install --omit=dev --ignore-scripts
 
 # Stage 1: runtime image
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 
 LABEL maintainer="National Library of Finland"
 LABEL version="0.1"
@@ -20,13 +20,13 @@ RUN apt-get update && apt-get install -y \
     apache2 \
     curl \
     git \
-    libapache2-mod-php8.1 \
+    libapache2-mod-php8.3 \
     locales \
-    php8.1 \
-    php8.1-curl \
-    php8.1-xsl \
-    php8.1-intl \
-    php8.1-mbstring \
+    php8.3 \
+    php8.3-curl \
+    php8.3-xsl \
+    php8.3-intl \
+    php8.3-mbstring \
     php-apcu \
     php-zip \
     unzip \
@@ -60,7 +60,7 @@ ENV LC_ALL=en_US.UTF-8
 ENV LANG=en_US.UTF-8  
 
 # timezone
-RUN sed -i 's/;date.timezone =/date.timezone = "UTC"/g' /etc/php/8.1/apache2/php.ini
+RUN sed -i 's/;date.timezone =/date.timezone = "UTC"/g' /etc/php/8.3/apache2/php.ini
 
 COPY dockerfiles/config/000-default.conf /etc/apache2/sites-available/000-default.conf