diff --git a/edit/server.py b/edit/server.py
index 5722902..19b3ebd 100644
--- a/edit/server.py
+++ b/edit/server.py
@@ -24,7 +24,7 @@ pages_dir: Path = _ROOT / os.environ.get("WIKI_PAGES_DIR", "pages")
 site_dir: Path = _ROOT / "site"
 _DB_PATH = _ROOT / "data" / "wiki.db"
 
-_SAFE_SLUG = re.compile(r"^[a-zA-Z0-9][a-zA-Z0-9_\-/]*$")
+_SAFE_SLUG = re.compile(r"^[a-zA-Z0-9_][a-zA-Z0-9_\-/]*$")
 _SESSION_TTL = 7 * 24 * 3600  # 7 days
 
 
diff --git a/site b/site
index 2c58500..23cefe5 160000
--- a/site
+++ b/site
@@ -1 +1 @@
-Subproject commit 2c58500aa33b5517652f41aae7bc9d6c73403275
+Subproject commit 23cefe51b320a600d99b87945a054e6f92cad1fe