diff --git a/pkgs/by-name/at/atac/package.nix b/pkgs/by-name/at/atac/package.nix
index c2bcfa6ca23c..1bc2f5bd79f8 100644
--- a/pkgs/by-name/at/atac/package.nix
+++ b/pkgs/by-name/at/atac/package.nix
@@ -7,16 +7,16 @@
 }:
 rustPlatform.buildRustPackage rec {
   pname = "atac";
-  version = "0.20.2";
+  version = "0.21.0";
 
   src = fetchFromGitHub {
     owner = "Julien-cpsn";
     repo = "ATAC";
     rev = "v${version}";
-    hash = "sha256-m+2D1Vrh6Qi7iDOCuio76p7d4eAkjuCSZXxJD9spPrw=";
+    hash = "sha256-NTdz7NtjvVQolSiqyCdR0P4dD0+ZQBKMEXTzwHPZgxU=";
   };
 
-  cargoHash = "sha256-W94oaBgws5FUF2Xax+O7faiQgfhcyTeGoCu+VJD0Wd0=";
+  cargoHash = "sha256-iLExF4lwXQ1BVBxEK+iD5HDkbjk38AbLaIirS04C4iw=";
 
   nativeBuildInputs = [ pkg-config ];