https://github.com/mkdocs/get-deps/issues/3

--- mkdocs_get_deps-0.2.2/mkdocs_get_deps/yaml_util.py.orig
+++ mkdocs_get_deps-0.2.2/mkdocs_get_deps/yaml_util.py
@@ -3,9 +3,9 @@
 import logging
 import os
 import os.path
+from collections.abc import Mapping
 from typing import IO, Any
 
-import mergedeep  # type: ignore[import-untyped]
 import yaml
 
 try:
@@ -46,5 +46,14 @@
         log.debug(f"Loading inherited configuration file: {abspath}")
         with open(abspath, "rb") as f:
             parent = yaml_load(f)
-        result = mergedeep.merge(parent, result)
+        result = deep_merge_dicts(parent, result)
     return result
+
+
+def deep_merge_dicts(dst: dict[str, Any], src: Mapping[str, Any]) -> dict[str, Any]:
+    for key, src_value in src.items():
+        if isinstance(dst.get(key), Mapping) and isinstance(src_value, Mapping):
+            deep_merge_dicts(dst[key], src_value)
+        else:
+            dst[key] = src_value
+    return dst
--- mkdocs_get_deps-0.2.2/pyproject.toml.orig
+++ mkdocs_get_deps-0.2.2/pyproject.toml
@@ -33,7 +33,6 @@
 requires-python = ">=3.9"
 dependencies = [
     "importlib-metadata >=4.3; python_version < '3.10'",
-    "mergedeep >=1.3.4",
     "platformdirs >=2.2.0",
     "PyYAML >=5.1",
 ]