diff --git a/src/sphinxcontrib/towncrier/_fragment_discovery.py b/src/sphinxcontrib/towncrier/_fragment_discovery.py
index 4903366..8ad506e 100644
--- a/src/sphinxcontrib/towncrier/_fragment_discovery.py
+++ b/src/sphinxcontrib/towncrier/_fragment_discovery.py
@@ -68,17 +68,34 @@ def lookup_towncrier_fragments(  # noqa: WPS210
 
     fragment_directory: Optional[str] = 'newsfragments'
     try:
-        fragment_base_directory = project_path / towncrier_config['directory']
+        try:
+            # Towncrier < 24.7.0rc1
+            fragment_base_directory = project_path / towncrier_config['directory']
+        except TypeError:
+            # Towncrier >= 24.7.0rc1
+            fragment_base_directory = project_path / towncrier_config.directory
+            if fragment_base_directory is None:
+                raise KeyError
     except KeyError:
         assert fragment_directory is not None
         fragment_base_directory = project_path / fragment_directory
     else:
         fragment_directory = None
 
-    _fragments, fragment_filenames = find_fragments(
-        str(fragment_base_directory),
-        towncrier_config['sections'],
-        fragment_directory,
-        towncrier_config['types'],
-    )
+    try:
+        # Towncrier < 24.7.0rc1
+        _fragments, fragment_filenames = find_fragments(
+            str(fragment_base_directory),
+            towncrier_config['sections'],
+            fragment_directory,
+            towncrier_config['types'],
+        )
+    except TypeError:
+        # Towncrier >= 24.7.0rc1
+        _fragments, fragment_filenames = find_fragments(
+            str(fragment_base_directory),
+            towncrier_config,
+            strict=False,
+        )
+
     return set(fragment_filenames)