diff --git a/pkgs/by-name/ma/mamba-cpp/package.nix b/pkgs/by-name/ma/mamba-cpp/package.nix
index f541eb67dd4b..75dbacee94dc 100644
--- a/pkgs/by-name/ma/mamba-cpp/package.nix
+++ b/pkgs/by-name/ma/mamba-cpp/package.nix
@@ -17,13 +17,13 @@
 }:
 stdenv.mkDerivation rec {
   pname = "mamba-cpp";
-  version = "2.1.0";
+  version = "2.1.1";
 
   src = fetchFromGitHub {
     owner = "mamba-org";
     repo = "mamba";
     tag = version;
-    hash = "sha256-7YR3ToPz80I9d1pRNiEaoIacVyaz2mqzdm0h5WGSb2g=";
+    hash = "sha256-JBwdfYM7J5R7HZyw5kVXwu4FlZUd2QPrsTaGuXnyAJI=";
   };
 
   nativeBuildInputs = [ cmake ];