diff --git a/pkgs/tools/nix/nixos-render-docs/default.nix b/pkgs/tools/nix/nixos-render-docs/default.nix
index 312bc8058245..065404f36c20 100644
--- a/pkgs/tools/nix/nixos-render-docs/default.nix
+++ b/pkgs/tools/nix/nixos-render-docs/default.nix
@@ -24,18 +24,15 @@ let
   };
 
   makeDeps = pkgs: small:
-    [ pkgs.frozendict ]
-    ++ (
-      if small
-      then [
-        markdown-it-py-no-tests
-        mdit-py-plugins-no-tests
-      ]
-      else [
-        pkgs.markdown-it-py
-        pkgs.mdit-py-plugins
-      ]
-    );
+    if small
+    then [
+      markdown-it-py-no-tests
+      mdit-py-plugins-no-tests
+    ]
+    else [
+      pkgs.markdown-it-py
+      pkgs.mdit-py-plugins
+    ];
 in
 
 python.pkgs.buildPythonApplication rec {
diff --git a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/docbook.py b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/docbook.py
index 28ab53720936..e6a761dcf13f 100644
--- a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/docbook.py
+++ b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/docbook.py
@@ -1,5 +1,4 @@
 from collections.abc import Mapping, MutableMapping, Sequence
-from frozendict import frozendict # type: ignore[attr-defined]
 from typing import Any, cast, Optional, NamedTuple
 
 import markdown_it
diff --git a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/md.py b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/md.py
index 599ee7e91c14..8fa7c547f5d8 100644
--- a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/md.py
+++ b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/md.py
@@ -1,6 +1,5 @@
 from abc import ABC
 from collections.abc import Mapping, MutableMapping, Sequence
-from frozendict import frozendict # type: ignore[attr-defined]
 from typing import Any, Callable, cast, get_args, Iterable, Literal, NoReturn, Optional
 
 import dataclasses
@@ -458,7 +457,7 @@ class Converter(ABC):
     __renderer__: Callable[[Mapping[str, str], markdown_it.MarkdownIt], Renderer]
 
     def __init__(self, manpage_urls: Mapping[str, str]):
-        self._manpage_urls = frozendict(manpage_urls)
+        self._manpage_urls = manpage_urls
 
         self._md = markdown_it.MarkdownIt(
             "commonmark",
diff --git a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/options.py b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/options.py
index 8282d7493249..28b4120fd7d9 100644
--- a/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/options.py
+++ b/pkgs/tools/nix/nixos-render-docs/src/nixos_render_docs/options.py
@@ -204,7 +204,7 @@ class DocBookConverter(BaseConverter):
     __renderer__ = OptionsDocBookRenderer
     __option_block_separator__ = ""
 
-    def __init__(self, manpage_urls: dict[str, str],
+    def __init__(self, manpage_urls: Mapping[str, str],
                  revision: str,
                  markdown_by_default: bool,
                  document_type: str,