diff --git a/pkgs/by-name/rm/rmux/package.nix b/pkgs/by-name/rm/rmux/package.nix
new file mode 100644
index 000000000000..c7fd9ab2af07
--- /dev/null
+++ b/pkgs/by-name/rm/rmux/package.nix
@@ -0,0 +1,42 @@
+{
+  lib,
+  fetchFromGitHub,
+  installShellFiles,
+  nix-update-script,
+  rustPlatform,
+}:
+
+rustPlatform.buildRustPackage (finalAttrs: {
+  pname = "rmux";
+  version = "0.5.0";
+
+  src = fetchFromGitHub {
+    owner = "Helvesec";
+    repo = "rmux";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-W4Jw2r+4x90+x5WkrRwxrlqytRlU4wEY98MWJZbcblY=";
+  };
+
+  __structuredAttrs = true;
+
+  cargoHash = "sha256-fu96A2v5VH01HxNGpdLpBTH3o9DHrocSyvuK14nE1fk=";
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  passthru.updateScript = nix-update-script { };
+
+  # Tests require network access
+  doCheck = false;
+
+  meta = {
+    description = "Universal multiplexer with a typed SDK";
+    homepage = "https://github.com/Helvesec/rmux";
+    changelog = "https://github.com/Helvesec/rmux/releases/tag/${finalAttrs.src.tag}";
+    license = with lib.licenses; [
+      asl20
+      mit
+    ];
+    maintainers = with lib.maintainers; [ fab ];
+    mainProgram = "rmux";
+  };
+})