diff --git a/pkgs/by-name/an/antimony/package.nix b/pkgs/by-name/an/antimony/package.nix
index 05c29ae9e698..2e9a10ff08d8 100644
--- a/pkgs/by-name/an/antimony/package.nix
+++ b/pkgs/by-name/an/antimony/package.nix
@@ -16,19 +16,19 @@
 }:
 
 let
-  gitRev = "8b805c674adad536f9dd552b4be75fadcb3c7db6";
+  gitRev = "b4b000937376a0ecf7ca1a2e708fb243624e7bdd";
   gitBranch = "develop";
   gitTag = "0.9.3";
 in
 stdenv.mkDerivation {
   pname = "antimony";
-  version = "2022-11-23";
+  version = "0.9.3-unstable-2025-10-12";
 
   src = fetchFromGitHub {
     owner = "mkeeter";
     repo = "antimony";
     rev = gitRev;
-    sha256 = "NmOuBewfHqtAim2cNP62LXgRjVWuVUGweV46sY1qjGk=";
+    hash = "sha256-O+nzL9XMCbtQiJx4xRs9w8a7uVqroZgxGnY0cydeqmw=";
   };
 
   patches = [ ./paths-fix.patch ];