diff --git a/cavemen/nixrunserver.sh b/cavemen/nixrunserver.sh
index 2756568..2379a48 100755
--- a/cavemen/nixrunserver.sh
+++ b/cavemen/nixrunserver.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env nix-shell
 #! nix-shell -i bash --pure
-#! nix-shell -p javaPackages.compiler.openjdk19
+#! nix-shell -p javaPackages.compiler.openjdk17
 #! nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/tarball/nixos-25.11
 
 java -Xmx8192M -Xms6144M -jar minecraft_server.jar nogui