diff --git a/shell.nix b/shell.nix
index 9f4f097..a7b8adb 100644
--- a/shell.nix
+++ b/shell.nix
@@ -3,8 +3,8 @@ with pkgs;
 let
   agent_src = fetchgit {
     url = "https://gitea.rixxc.de/rixxc/x25519_agent.git";
-    rev = "eafc5e9df6b316e0f9804b73e43d25f72f2c1d79";
-    hash = "sha256-PTSFEOSS3dKr6g+y2z/KN1lE5md+D25CKVmCc2YpigI=";
+    rev = "d9b6dea879492dc5436e14ac8ea7367d641f6deb";
+    hash = "sha256-B7aFz5r8dNoAO829Ao6/1Wl5TqDh9xhfDds0ZF0cRqI=";
   };
 
   agent = callPackage "${agent_src}/default.nix" { };