diff --git a/java/flake.nix b/java/flake.nix
index 2137a3a..e58e740 100644
--- a/java/flake.nix
+++ b/java/flake.nix
@@ -22,7 +22,7 @@
 
       devShells = forEachSupportedSystem ({ pkgs }: {
         default = pkgs.mkShell {
-          packages = with pkgs; [ maven gradle gcc ncurses patchelf zlib ];
+          packages = with pkgs; [ jdk maven gradle gcc ncurses patchelf zlib ];
         };
       });
     };