diff --git a/pkgs/development/python-modules/karton-asciimagic/default.nix b/pkgs/development/python-modules/karton-asciimagic/default.nix
index 6edafea1d560..3ebba4202b3b 100644
--- a/pkgs/development/python-modules/karton-asciimagic/default.nix
+++ b/pkgs/development/python-modules/karton-asciimagic/default.nix
@@ -7,13 +7,13 @@
 
 buildPythonPackage rec {
   pname = "karton-asciimagic";
-  version = "1.1.0";
+  version = "1.2.0";
 
   src = fetchFromGitHub {
     owner = "CERT-Polska";
     repo = pname;
     rev = "v${version}";
-    sha256 = "0vj4b8man81g99g4c53zyvp1gc47c2imj5ha9r4z4bf8gs3aqsv6";
+    sha256 = "sha256-sY5ik9efzLBa6Fbh17Vh4q7PlwOGYjuodU9yvp/8E3k=";
   };
 
   propagatedBuildInputs = [