diff --git a/minecraft/Dockerfile.template b/minecraft/Dockerfile.template
index 7d29b96..8044f4f 100644
--- a/minecraft/Dockerfile.template
+++ b/minecraft/Dockerfile.template
@@ -2,7 +2,7 @@ FROM balenalib/%%BALENA_MACHINE_NAME%%-debian:latest
 
 ENV DBUS_SYSTEM_BUS_ADDRESS=unix:path=/host/run/dbus/system_bus_socket
 
-RUN install_packages wget jq openjdk-17-jre
+RUN install_packages wget jq openjdk-21-jre
 
 COPY . /
 
@@ -10,4 +10,4 @@ COPY start.sh /usr/src/
 
 RUN chmod +x /usr/src/start.sh
 
-CMD ["/bin/bash", "/usr/src/start.sh"]
\ No newline at end of file
+CMD ["/bin/bash", "/usr/src/start.sh"]