diff --git a/testing/Dockerfile b/testing/Dockerfile
index 0363e4e..44dc265 100644
--- a/testing/Dockerfile
+++ b/testing/Dockerfile
@@ -15,7 +15,7 @@ ARG INSTALL_SCRIPT=https://gitlab.fithwum.tech/fithwum/minecraft/-/raw/master/te
 # Install java-17 & Dependencies.
 RUN apt-get -y update && apt-get autoclean && apt-get autoremove \
 	&& apt-get -y --fix-broken install \
-	&& apt-get install -y --no-install-recommends openjdk-17-jdk screen bzip2 jq \
+	&& apt-get install -y --no-install-recommends openjdk-21-jdk screen bzip2 jq \
 	&& rm -rf /var/lib/apt/lists/* \
 	&& update-ca-certificates -f;