diff --git a/lib/galaxy/tools/__init__.py b/lib/galaxy/tools/__init__.py
index 3881cff3d12..a8098aa8a01 100644
--- a/lib/galaxy/tools/__init__.py
+++ b/lib/galaxy/tools/__init__.py
@@ -1706,7 +1706,7 @@ class Tool(UsesDictVisibleKeys, MaybeToolParameterBundle):
         self.config_files.extend(tool_source.parse_template_configfiles())
         self.config_files.extend(tool_source.parse_file_sources())
 
-    def parse_tests(self):
+    def parse_tests(self) -> None:
         self.__tests_parsed = True
         source = self.tool_source
         if source is None:
diff --git a/lib/galaxy/tools/lazy_toolbox.py b/lib/galaxy/tools/lazy_toolbox.py
index 0e0e73714b0..eec0d309c70 100644
--- a/lib/galaxy/tools/lazy_toolbox.py
+++ b/lib/galaxy/tools/lazy_toolbox.py
@@ -676,7 +676,7 @@ class LazyToolBox(ToolBox):
         self._tool_panel_loaded_from_index = True
         return True
 
-    def _load_tool_panel(self):
+    def _load_tool_panel(self) -> None:
         if getattr(self, "_tool_panel_loaded_from_index", False):
             return
         super()._load_tool_panel()