diff --git a/requirements.txt b/requirements.txt
index e5b93b8..b18679b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,3 +18,4 @@
 tenacity>=4.4.0 # Apache-2.0
 testtools>=2.2.0 # MIT
 keystoneauth1>=3.3.0 # Apache-2.0
+httpx[http2]>=0.14.2 # BSD