diff --git a/shell.nix b/shell.nix
index ae27378..b04b53a 100644
--- a/shell.nix
+++ b/shell.nix
@@ -31,7 +31,11 @@ let
   };
 
   jdk = unstable.jdk23;
-  gradle = unstable.gradle;
+  gradle = unstable.gradle.override {
+    java = jdk;
+    # Required for `gradle javaToolchains` to list JDK23
+    javaToolchains = [ jdk ];
+  };
 in
 
 (