diff --git a/main.py b/main.py
index 922d55a..329ba04 100644
--- a/main.py
+++ b/main.py
@@ -44,7 +44,7 @@ def login():
     elif request.method == "POST":
         client = Client(VAULT_ADDR)
         username, password = request.form["username"], request.form["password"]
-        client.auth_userpass(username, password)
+        client.auth.userpass.login(username, password)
         assert client.is_authenticated()
 
         role = request.form.get("role")
diff --git a/requirements.txt b/requirements.txt
index 9c7ba99..6a700c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 flask
-hvac<1.0.0
+hvac>=1.0.0