diff --git a/.appveyor.yml b/.appveyor.yml
index e6f7bf48..9dab32f2 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,7 +1,8 @@
 # appveyor.yml - https://www.appveyor.com/docs/lang/python
-# https://www.appveyor.com/docs/windows-images-software/#visual-studio-2022
+# https://www.appveyor.com/docs/windows-images-software/#visual-studio-2017
 ---
-image: Visual Studio 2022
+image: Visual Studio 2017
+
 environment:
   matrix:
     - PY_PYTHON: 2.7
diff --git a/requirements-optional.txt b/requirements-optional.txt
index 2e112e95..a6c1f90c 100644
--- a/requirements-optional.txt
+++ b/requirements-optional.txt
@@ -10,4 +10,5 @@ chardet>=2.2.1
 
 # lxml is supported with its own treebuilder ("lxml") and otherwise
 # uses the standard ElementTree support
-lxml>=3.4.0 ; platform_python_implementation == 'CPython'
+lxml>=3.4.0, <5.0.0 ; python_version < '3.0' and platform_python_implementation == 'CPython'
+lxml>=3.4.0 ; python_version >= '3.0' and platform_python_implementation == 'CPython'
\ No newline at end of file