diff --git a/java/flake.lock b/java/flake.lock
index 376f488..d57185e 100644
--- a/java/flake.lock
+++ b/java/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1726560853,
-        "narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1728538411,
-        "narHash": "sha256-f0SBJz1eZ2yOuKUr5CA9BHULGXVSn6miBuUWdTyhUhU=",
+        "lastModified": 1755082269,
+        "narHash": "sha256-Ix7ALeaxv9tW4uBKWeJnaKpYZtZiX4H4Q/MhEmj4XYA=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b69de56fac8c2b6f8fd27f2eca01dcda8e0a4221",
+        "rev": "d74de548348c46cf25cb1fcc4b74f38103a4590d",
         "type": "github"
       },
       "original": {
diff --git a/java/flake.nix b/java/flake.nix
index e1a7ff6..ede6013 100644
--- a/java/flake.nix
+++ b/java/flake.nix
@@ -15,8 +15,8 @@
   in {
     devShells.default = pkgs.mkShell {
       packages = with pkgs; [
-        jdk8
-        openjdk17
+        jdk
+        gradle
 
         # You might want to use your own IDE.
         # (jetbrains.plugins.addPlugins jetbrains.idea-ultimate [ "github-copilot" ])