diff --git a/README.md b/README.md
index cbf55a1..9aacd37 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,21 @@ The following options can be specified using MDX comments:
 
 This approach allows you to add metadata to the code block without modifying the code fence itself, making it particularly useful in MDX environments.
 
+## Customizing your own custom MarkdownIt parser
+
+You can configure your own [Markdown-it-py](https://pypi.org/project/markdown-it-py/) parser used by `pytest-markdown-docs` by defining a `pytest_markdown_docs_markdown_it`. For example, you can support
+`mkdocs`'s admonitions with:
+
+```python
+def pytest_markdown_docs_markdown_it():
+    import markdown_it
+    from mdit_py_plugins.admon import admon_plugin
+
+    mi = markdown_it.MarkdownIt(config="commonmark")
+    mi.use(admon_plugin)
+    return mi
+```
+
 ## Testing of this plugin
 
 You can test this module itself (sadly not using markdown tests at the moment) using pytest:
diff --git a/pyproject.toml b/pyproject.toml
index 174f2fd..44eeca4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,4 +29,5 @@ dev-dependencies = [
     "pre-commit>=3.5.0",
     "pytest~=8.1.0",
     "ruff~=0.9.10",
+    "mdit-py-plugins~=0.4.2"
 ]
diff --git a/src/pytest_markdown_docs/hooks.py b/src/pytest_markdown_docs/hooks.py
index c5e5a32..a473711 100644
--- a/src/pytest_markdown_docs/hooks.py
+++ b/src/pytest_markdown_docs/hooks.py
@@ -1,5 +1,14 @@
+import pytest
 import typing
 
+if typing.TYPE_CHECKING:
+    from markdown_it import MarkdownIt
+
 
 def pytest_markdown_docs_globals() -> typing.Dict[str, typing.Any]:
     return {}
+
+
+@pytest.hookspec(firstresult=True)
+def pytest_markdown_docs_markdown_it() -> "MarkdownIt":
+    """Configure a custom markdown_it.MarkdownIt parser."""
diff --git a/src/pytest_markdown_docs/plugin.py b/src/pytest_markdown_docs/plugin.py
index d8c9066..2cb321c 100644
--- a/src/pytest_markdown_docs/plugin.py
+++ b/src/pytest_markdown_docs/plugin.py
@@ -24,6 +24,7 @@
 
 if typing.TYPE_CHECKING:
     from markdown_it.token import Token
+    from markdown_it import MarkdownIt
 
 logger = logging.getLogger("pytest-markdown-docs")
 
@@ -123,16 +124,14 @@ def get_prefixed_strings(
 
 
 def extract_fence_tests(
+    markdown_it_parser: "MarkdownIt",
     markdown_string: str,
     start_line_offset: int,
     source_path: pathlib.Path,
     markdown_type: str = "md",
     fence_syntax: FenceSyntax = FenceSyntax.default,
 ) -> typing.Generator[FenceTestDefinition, None, None]:
-    import markdown_it
-
-    mi = markdown_it.MarkdownIt(config="commonmark")
-    tokens = mi.parse(markdown_string)
+    tokens = markdown_it_parser.parse(markdown_string)
 
     prev = ""
     for i, block in enumerate(tokens):
@@ -294,8 +293,11 @@ def find_object_tests_recursive(
                     or "<Unnamed obj>"
                 )
                 fence_syntax = FenceSyntax(self.config.option.markdowndocs_syntax)
+                markdown_it_parser = self.config.hook.pytest_markdown_docs_markdown_it()
+
                 for i, fence_test in enumerate(
                     extract_fence_tests(
+                        markdown_it_parser,
                         docstr,
                         docstring_offset,
                         source_path=self.path,
@@ -317,8 +319,11 @@ def collect(self):
         markdown_content = self.path.read_text("utf8")
         fence_syntax = FenceSyntax(self.config.option.markdowndocs_syntax)
 
+        markdown_it_parser = self.config.hook.pytest_markdown_docs_markdown_it()
+
         for i, fence_test in enumerate(
             extract_fence_tests(
+                markdown_it_parser,
                 markdown_content,
                 source_path=self.path,
                 start_line_offset=0,
@@ -374,3 +379,10 @@ def pytest_addoption(parser: Parser) -> None:
 
 def pytest_addhooks(pluginmanager):
     pluginmanager.add_hookspecs(hooks)
+
+
+@pytest.hookimpl
+def pytest_markdown_docs_markdown_it() -> "MarkdownIt":
+    from markdown_it import MarkdownIt
+
+    return MarkdownIt(config="commonmark")
diff --git a/tests/plugin_test.py b/tests/plugin_test.py
index 8d050d2..1ed61a2 100644
--- a/tests/plugin_test.py
+++ b/tests/plugin_test.py
@@ -470,3 +470,43 @@ def runtest(self, test, args):
         ],
         consecutive=True,
     )
+
+
+def test_admonition_markdown_text_file(testdir):
+    testdir.makeconftest(
+        """
+        def pytest_markdown_docs_globals():
+            return {"a": "hello"}
+
+        def pytest_markdown_docs_markdown_it():
+            import markdown_it
+            from mdit_py_plugins.admon import admon_plugin
+
+            mi = markdown_it.MarkdownIt(config="commonmark")
+            mi.use(admon_plugin)
+            return mi
+    """
+    )
+
+    testdir.makefile(
+        ".md",
+        """
+        ??? quote
+
+            ```python
+            assert a + " world" == "hello world"
+            ```
+
+        !!! info
+            ```python
+            assert False
+            ```
+
+        ???+ note
+            ```python
+            **@ # this is a syntax error
+            ```
+    """,
+    )
+    result = testdir.runpytest("--markdown-docs")
+    result.assert_outcomes(passed=1, failed=2)