diff --git a/nixpacks.toml b/nixpacks.toml
new file mode 100644
index 0000000..5c73237
--- /dev/null
+++ b/nixpacks.toml
@@ -0,0 +1,4 @@
+# nixpacks.toml
+
+[providers]
+java = "21"
diff --git a/settings.gradle b/settings.gradle
index 45f05fa..e7e89df 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,11 +1 @@
 rootProject.name = 'testing'
-
-toolchainManagement {
-    jvm {
-        javaRepositories {
-            repository("foojay") {
-                vendor = "any"
-            }
-        }
-    }
-}