diff --git a/nixpacks.toml b/nixpacks.toml
index 5c73237..40b2065 100644
--- a/nixpacks.toml
+++ b/nixpacks.toml
@@ -1,4 +1,4 @@
 # nixpacks.toml
 
-[providers]
-java = "21"
+[phases.setup]
+providers = ["java@21"]