diff --git a/pkgs/development/python-modules/libmambapy/default.nix b/pkgs/development/python-modules/libmambapy/default.nix
index 73c31a259d9d..97f5e0dec10a 100644
--- a/pkgs/development/python-modules/libmambapy/default.nix
+++ b/pkgs/development/python-modules/libmambapy/default.nix
@@ -22,14 +22,14 @@
 }:
 buildPythonPackage rec {
   pname = "libmambapy";
-  version = "1.5.7";
+  version = "2024.03.25";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "mamba-org";
     repo = "mamba";
-    rev = "${pname}-${version}";
-    hash = "sha256-HfmvLi9IBWlaGAn2Ej4Bnm4b3l19jEXwNl5IUkdVxi0=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-sxZDlMFoMLq2EAzwBVO++xvU1C30JoIoZXEX/sqkXS0=";
   };
 
   nativeBuildInputs = [