diff --git a/pkgs/by-name/co/commix/package.nix b/pkgs/by-name/co/commix/package.nix
index 56bdcc1bceab..1e574f50eb65 100644
--- a/pkgs/by-name/co/commix/package.nix
+++ b/pkgs/by-name/co/commix/package.nix
@@ -6,14 +6,14 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "commix";
-  version = "3.9";
+  version = "4.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "commixproject";
     repo = "commix";
-    rev = "refs/tags/v${version}";
-    hash = "sha256-HX+gEL9nmq9R1GFw8xQaa7kBmW7R0IepitM08bIf3vY=";
+    tag = "v${version}";
+    hash = "sha256-AikhXMacsJ7AZyKWcmu+ngs9KeiwQE60cpM2CV8ej1Y=";
   };
 
   postPatch = ''