diff --git a/flakes/emacs/pkgs/agent-shell.nix b/flakes/emacs/pkgs/agent-shell.nix
index 5d1d3c1..e2b6355 100644
--- a/flakes/emacs/pkgs/agent-shell.nix
+++ b/flakes/emacs/pkgs/agent-shell.nix
@@ -1,13 +1,16 @@
 { pkgs, final }:
+let
+  rev = "v0.50.1";
+in
 final.melpaBuild {
   pname = "agent-shell";
   ename = "agent-shell";
-  version = "0.47.3";
+  version = pkgs.lib.removePrefix "v" rev;
 
   src = pkgs.fetchFromGitHub {
     owner = "xenodium";
     repo = "agent-shell";
-    rev = "v0.50.1";
+    inherit rev;
     hash = "sha256-y3WKd7w9zNebNlP3phMLmMbrFd+MHqwwJH/dUP6VSlo=";
   };