diff --git a/arch-builder/Dockerfile b/arch-builder/Dockerfile
index c6956cf..fec32b8 100644
--- a/arch-builder/Dockerfile
+++ b/arch-builder/Dockerfile
@@ -22,7 +22,8 @@ RUN pacman -S --noconfirm --needed \
     python-sphinx \
     python-yaml \
     openssh \
-    texlive-latexextra
+    texlive-latexextra \
+    jdk21-openjdk 
 
 RUN mkdir downloads
 RUN curl --retry 3 https://gitea.woggioni.net/api/packages/woggioni/generic/aarch64-unknown-linux-musl-gcc/13.2.0/aarch64-unknown-linux-musl-gcc-13.2.0-1-x86_64.pkg.tar.zst \