diff --git a/vanilla/Dockerfile b/vanilla/Dockerfile
index 2c04def..bf35fcc 100644
--- a/vanilla/Dockerfile
+++ b/vanilla/Dockerfile
@@ -1,4 +1,4 @@
-FROM fithwum/base-image:debian-bullseye
+FROM fithwum/base-image:debian-bookworm
 LABEL maintainer "fithwum"
 
 # Environment Variables
@@ -9,10 +9,12 @@ ARG INSTALL_SCRIPT=https://gitlab.fithwum.tech/fithwum/vintage-story/-/raw/maste
 
 # Install Dependencies.
 RUN apt-get -y update && apt-get autoclean && apt-get autoremove \
-	&& apt-get install wget pgrep screen -y \
+	&& wget https://packages.microsoft.com/config/debian/12/packages-microsoft-prod.deb -O packages-microsoft-prod.deb \
+	&& dpkg -i packages-microsoft-prod.deb \
+	&& rm packages-microsoft-prod.deb \
+	&& apt-get -y update && apt-get install dotnet-sdk-9.0 bzip2 jq wget pgrep screen -y \
 	&& useradd vintagestory -s /sbin/nologin -m \
-	&& apt-get -y update && apt-get -y --fix-broken install \
-	&& apt-get install -y --no-install-recommends msopenjdk-21 screen bzip2 jq \
+	&& apt-get -y --fix-broken install \
 	&& rm -rf /var/lib/apt/lists/* \
 	&& update-ca-certificates -f;