diff --git a/.github/py-shiny/check/action.yaml b/.github/py-shiny/check/action.yaml
new file mode 100644
index 000000000..04975a87c
--- /dev/null
+++ b/.github/py-shiny/check/action.yaml
@@ -0,0 +1,35 @@
+name: 'check py-shiny'
+description: 'Action that checks py-shiny in multiple steps so that any of them may fail but not prevent the others from running. Note, this action is used by py-htmltools as a way to consistently check py-shiny. If more checks are needed for py-htmltools to believe py-shiny is working, it should be added here.'
+runs:
+  using: "composite"
+  steps:
+    - name: Run unit tests
+      shell: bash
+      run: |
+        # Run unit tests
+        make check-tests
+
+    - name: Type check
+      shell: bash
+      run: |
+        # Type check
+        make check-types
+
+    - name: Lint code
+      shell: bash
+      run: |
+        # Lint code
+        make check-lint
+
+    - name: Verify code formatting
+      shell: bash
+      run: |
+        # Verify code formatting
+        make check-format
+
+    - name: Verify code can run with mypy (not Windows)
+      if: ${{ runner.os != 'Windows' }}
+      shell: bash
+      run: |
+        # Verify code can run with mypy (not Windows)
+        make ci-check-mypy-can-run
diff --git a/shiny/ui/_navs.py b/shiny/ui/_navs.py
index ca1cb457c..2480c03fb 100644
--- a/shiny/ui/_navs.py
+++ b/shiny/ui/_navs.py
@@ -1,27 +1,21 @@
 from __future__ import annotations
 
-__all__ = (
-    "nav_panel",
-    "nav_menu",
-    "nav_control",
-    "nav_spacer",
-    "navset_tab",
-    "navset_card_tab",
-    "navset_pill",
-    "navset_underline",
-    "navset_card_pill",
-    "navset_card_underline",
-    "navset_pill_list",
-    "navset_hidden",
-    "navset_bar",
-)
-
 import collections.abc
 import copy
 import re
 from typing import Any, Literal, Optional, Sequence, cast
 
-from htmltools import MetadataNode, Tag, TagAttrs, TagChild, TagList, css, div, tags
+from htmltools import (
+    HTML,
+    MetadataNode,
+    Tag,
+    TagAttrs,
+    TagChild,
+    TagList,
+    css,
+    div,
+    tags,
+)
 
 from .._docstring import add_example
 from .._namespaces import resolve_id_or_none
@@ -34,6 +28,22 @@
 from .css import CssUnit, as_css_padding, as_css_unit
 from .fill import as_fill_item, as_fillable_container
 
+__all__ = (
+    "nav_panel",
+    "nav_menu",
+    "nav_control",
+    "nav_spacer",
+    "navset_tab",
+    "navset_card_tab",
+    "navset_pill",
+    "navset_underline",
+    "navset_card_pill",
+    "navset_card_underline",
+    "navset_pill_list",
+    "navset_hidden",
+    "navset_bar",
+)
+
 
 # -----------------------------------------------------------------------------
 # Navigation items
@@ -81,7 +91,7 @@ def resolve(
 
         return nav, content
 
-    def get_value(self) -> Optional[str]:
+    def get_value(self) -> str | HTML | None:
         if self.content is None:
             return None
         a_tag = cast(Tag, self.nav.children[0])
diff --git a/tests/pytest/test_modules.py b/tests/pytest/test_modules.py
index 2b8c7d3ed..09f267d32 100644
--- a/tests/pytest/test_modules.py
+++ b/tests/pytest/test_modules.py
@@ -6,7 +6,7 @@
 from typing import cast
 
 import pytest
-from htmltools import Tag, TagList
+from htmltools import HTML, Tag, TagList
 
 from shiny import App, Inputs, Outputs, Session, module, reactive, ui
 from shiny._connection import MockConnection
@@ -28,7 +28,7 @@ def mod_outer_ui() -> TagList:
     return TagList(mod_inner_ui("inner"), ui.output_text("out2"))
 
 
-def get_id(x: TagList, child_idx: int = 0) -> str:
+def get_id(x: TagList, child_idx: int = 0) -> str | HTML:
     return cast(Tag, x[child_idx]).attrs["id"]
 
 
@@ -44,7 +44,7 @@ def test_module_ui():
 
 @pytest.mark.asyncio
 async def test_session_scoping():
-    sessions: dict[str, Session | str | None] = {}
+    sessions: dict[str, Session | str | HTML | None] = {}
 
     @module.server
     def inner_server(input: Inputs, output: Outputs, session: Session):