diff --git a/Dockerfile b/Dockerfile
index 284e393..8410786 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@
 FROM alpine AS builder
 
 RUN nice -20 apk update
+RUN nice -20 apk upgrade
 RUN nice -20 apk add go git
 RUN mkdir /builder /builder/bin
 RUN git clone --depth=1 https://github.com/gorcon/rcon-cli /builder/rcon-cli
@@ -27,6 +28,7 @@ LABEL org.opencontainers.image.licenses="GPL-3.0-only"
 
 RUN true
 RUN nice -20 apk update
+RUN nice -20 apk upgrade
 RUN nice -20 apk add openjdk21-jre openjdk17-jre openjdk11-jre
 RUN mkdir /app
 ADD entrypoint.sh /app/entrypoint.sh