diff --git a/setup.cfg b/setup.cfg
index ba0c04997..c7dfbd29f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -110,7 +110,9 @@ s3 =
     aiobotocore[boto3]>1.0.1
 ssh = sshfs[bcrypt]>=2021.8.1
 ssh_gssapi = sshfs[gssapi]>=2021.8.1
-webdav = webdav4>=0.9.1
+webdav =
+    webdav4>=0.9.1
+    httpx>=0.18.1,<0.20.0
 # not to break `dvc[webhdfs]`
 webhdfs =
 terraform = tpi[ssh]>=2.0.0