diff --git a/hearthstone/cardxml.py b/hearthstone/cardxml.py
index 77a707b..f3b96cc 100644
--- a/hearthstone/cardxml.py
+++ b/hearthstone/cardxml.py
@@ -397,7 +397,10 @@ def is_functional_duplicate_of(self, other):
 XML_URL = "https://api.hearthstonejson.com/v1/latest/CardDefs.xml"
 
 
-def _bootstrap_from_web(url: str, parse: Callable[[Iterator[Tuple[str, Any]]], None]):
+def _bootstrap_from_web(parse: Callable[[Iterator[Tuple[str, Any]]], None], url=None):
+	if url is None:
+		url = XML_URL
+
 	with tempfile.TemporaryFile(mode="rb+") as fp:
 		if download_to_tempfile_retry(url, fp):
 			fp.flush()
@@ -446,7 +449,7 @@ def parse(context: Iterator[Tuple[str, Any]]):
 				has_lib = False
 
 			if not has_lib:
-				_bootstrap_from_web(url or XML_URL, parse)
+				_bootstrap_from_web(parse, url=url)
 
 		if not db:
 			_bootstrap_from_library(parse, path=path)
diff --git a/hearthstone/mercenaryxml.py b/hearthstone/mercenaryxml.py
index c2dae32..ce86230 100644
--- a/hearthstone/mercenaryxml.py
+++ b/hearthstone/mercenaryxml.py
@@ -191,9 +191,12 @@ def to_xml(self):
 XML_URL = "https://api.hearthstonejson.com/v1/latest/MercenaryDefs.xml"
 
 
-def _bootstrap_from_web(parse: Callable[[Iterator[Tuple[str, Any]]], None]):
+def _bootstrap_from_web(parse: Callable[[Iterator[Tuple[str, Any]]], None], url=None):
+	if url is None:
+		url = XML_URL
+
 	with tempfile.TemporaryFile(mode="rb+") as fp:
-		if download_to_tempfile_retry(XML_URL, fp):
+		if download_to_tempfile_retry(url, fp):
 			fp.flush()
 			fp.seek(0)
 
@@ -210,7 +213,7 @@ def _bootstrap_from_library(parse: Callable[[Iterator[Tuple[str, Any]]], None],
 		parse(ElementTree.iterparse(f, events=("start", "end",)))
 
 
-def load(path=None, locale="enUS"):
+def load(locale="enUS", path=None, url=None):
 	cache_key = (path, locale)
 	if cache_key not in mercenary_cache:
 		db = {}
@@ -232,7 +235,7 @@ def parse(context: Iterator[Tuple[str, Any]]):
 					root.clear()  # type: ignore
 
 		if path is None:
-			_bootstrap_from_web(parse)
+			_bootstrap_from_web(parse, url=url)
 
 		if not db:
 			_bootstrap_from_library(parse, path=path)