diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index 8dd288a67eb4..1e3cd0d8f81d 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -6577,6 +6577,12 @@
     github = "dottybot";
     githubId = 12519979;
   };
+  douzebis = {
+    email = "fred@atlant.is";
+    github = "douzebis";
+    githubId = 61088438;
+    name = "Frédéric Ruget";
+  };
   dpaetzel = {
     email = "david.paetzel@posteo.de";
     github = "dpaetzel";
diff --git a/pkgs/by-name/ba/base91/package.nix b/pkgs/by-name/ba/base91/package.nix
new file mode 100644
index 000000000000..7acf2197edf8
--- /dev/null
+++ b/pkgs/by-name/ba/base91/package.nix
@@ -0,0 +1,38 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "base91";
+  version = "0.1.0";
+
+  src = fetchFromGitHub {
+    owner = "douzebis";
+    repo = "base91";
+    rev = "v${finalAttrs.version}";
+    hash = "sha256-Lx569OtNU0z884763FSByH0yXIq6GzeXyp5NVvMejco="; # update as needed
+  };
+
+  makeFlags = [
+    "CC=cc"
+    "-C"
+    "src"
+    "all"
+  ];
+  installFlags = [
+    "-C"
+    "src"
+    "install"
+    "prefix=$(out)"
+  ];
+
+  meta = {
+    description = "CLI tool for encoding binary data as ASCII characters";
+    homepage = "https://github.com/douzebis/base91";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ douzebis ];
+    platforms = lib.platforms.unix;
+  };
+})