diff --git a/.github/workflows/playwright.yml b/.github/workflows/test.yml
similarity index 100%
rename from .github/workflows/playwright.yml
rename to .github/workflows/test.yml
diff --git a/_data/sponsored_events.json b/_data/sponsored_events.json
index a344052..7685236 100644
--- a/_data/sponsored_events.json
+++ b/_data/sponsored_events.json
@@ -18,6 +18,10 @@
       "Africa": ["Django Girls - Koforidua", "Django Girls - Ho", "PyCon Africa", "DjangoCon Africa", "IndabaX - Botswana", "PyCon Namibia", "PyTogo", "Zero to Hero Mentorship Program - Nigeria", "PyCon Nigeria"],
       "North America": ["PyTexas Foundation", "PyOhio", "PyBeach", "PyBay", "PyDay Santo Domingo (SDQ)"],
       "South America": ["Ubuntu Tech - Colombia", "Django Girls - Colombia"]
+    },
+    "2026": {
+      "Africa": ["PyCon Namibia"],
+      "North America": ["PyCascades"]
     }
   }
 }
diff --git a/pyproject.toml b/pyproject.toml
index 1449edd..3a2ab08 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ dependencies = [
     "pyyaml",
 ]
 
-[project.optional-dependencies]
+[dependency-groups]
 dev = [
   "pre-commit",
   "typer",
diff --git a/tests/conftest.py b/tests/conftest.py
index 46d107c..e41bdb1 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -4,7 +4,6 @@
     "",
     "blog",
     "about.html",
-    "bpd-events",
     "support.html",
 ]
 
diff --git a/tests/test.py b/tests/test.py
index c07abb0..0e8a3dc 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -13,16 +13,13 @@ def __init__(self):
         super().__init__()
         self.title = ""
         self._in_title = False
-        self.lang = None
         self.meta_description = None
         self.links = []
         self.classes = []
 
     def handle_starttag(self, tag, attrs):
         attrs_dict = dict(attrs)
-        if tag == "html":
-            self.lang = attrs_dict.get("lang")
-        elif tag == "title":
+        if tag == "title":
             self._in_title = True
         elif tag == "meta" and attrs_dict.get("name") == "description":
             self.meta_description = attrs_dict.get("content", "")
@@ -72,7 +69,6 @@ def built_site():
     "": "index.html",
     "blog": "blog/index.html",
     "about.html": "about.html",
-    "bpd-events": "bpd-events/page.html",
     "support.html": "support.html",
 }
 
@@ -84,26 +80,6 @@ def test_destination(loaded_route: str, built_site: pathlib.Path) -> None:
     assert output_file.exists(), f"Expected output file not found: {output_file}"
 
 
-LANG_ROUTES = {
-    "/": "index.html",
-    "/about.html": "about.html",
-    "/bpd-events/": "bpd-events/page.html",
-    "/support.html": "support.html",
-    "/blog/": "blog/index.html",
-}
-
-
-@pytest.mark.parametrize("route, file_path", list(LANG_ROUTES.items()))
-def test_headers_in_language(
-    built_site: pathlib.Path, route: str, file_path: str
-) -> None:
-    """Check that each page has lang='en' on the html element."""
-    parsed = parse_html(built_site / file_path)
-    assert (
-        parsed.lang == "en"
-    ), f"Expected lang='en' on {route}, got lang='{parsed.lang}'"
-
-
 @pytest.mark.parametrize(
     "title, file_path",
     (
diff --git a/uv.lock b/uv.lock
index f7dde34..3540e33 100644
--- a/uv.lock
+++ b/uv.lock
@@ -2,9 +2,6 @@ version = 1
 revision = 3
 requires-python = ">=3.13"
 
-[options]
-prerelease-mode = "allow"
-
 [[package]]
 name = "annotated-doc"
 version = "0.0.4"
@@ -57,7 +54,7 @@ dependencies = [
     { name = "render-engine", extra = ["cli"] },
 ]
 
-[package.optional-dependencies]
+[package.dev-dependencies]
 dev = [
     { name = "pre-commit" },
     { name = "pytest" },
@@ -68,15 +65,18 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "pre-commit", marker = "extra == 'dev'" },
-    { name = "pytest", marker = "extra == 'dev'" },
-    { name = "python-frontmatter", marker = "extra == 'dev'" },
     { name = "pyyaml" },
     { name = "render-engine", extras = ["cli"], specifier = ">=2026.3.4a2" },
-    { name = "rich", marker = "extra == 'dev'" },
-    { name = "typer", marker = "extra == 'dev'" },
 ]
-provides-extras = ["dev"]
+
+[package.metadata.requires-dev]
+dev = [
+    { name = "pre-commit" },
+    { name = "pytest" },
+    { name = "python-frontmatter" },
+    { name = "rich" },
+    { name = "typer" },
+]
 
 [[package]]
 name = "certifi"