diff --git a/Makefile b/Makefile
index 8be822b11f..879a6ce82d 100644
--- a/Makefile
+++ b/Makefile
@@ -68,7 +68,7 @@ $(VENV_BIN):
 	touch $@
 
 $(PYTHON_BIN): $(VENV_BIN) requirements.txt
-	python3 -m venv -p python3 $(VENV_DIR)
+	python3 -m venv $(VENV_DIR)
 	$@ -m pip install -r requirements.txt
 
 $(MAKO_RENDER): $(PYTHON_BIN) $(wildcard $(GEN_LIB_SRC)/*)
diff --git a/requirements.txt b/requirements.txt
index 2e6823cf24..398d5b94e4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,4 @@ ghp-import
 pyright
 types-PyYAML
 inflect
+urllib3
diff --git a/src/generator/templates/index.html.mako b/src/generator/templates/index.html.mako
index cc978ac3da..df6931b369 100644
--- a/src/generator/templates/index.html.mako
+++ b/src/generator/templates/index.html.mako
@@ -15,7 +15,7 @@
     # type cache: {'api': type-api.yaml-contents }
     tc = dict()
     for api_type in make.types:
-        data = yaml.load_all(open(os.path.join(directories.api_base, 'type-%s.yaml' % api_type)))
+        data = yaml.load_all(open(os.path.join(directories.api_base, 'type-%s.yaml' % api_type)), Loader = yaml.Loader)
         tc[api_type] = merge_required_fields(type(directories)(next(data)))
     # end for each type to load cache for
 %>\