diff --git a/tox.ini b/tox.ini
index 016081ab..4637a0cd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,10 @@ deps =
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/requirements-extra.txt
 
+[testenv:WINDOWS]
+deps =
+    -r{toxinidir}/requirements-windows.txt
+
 [flake8]
 exclude = .tox,env,build,hscommon,qtlib,cocoalib,cocoa,help,./qt/dg_rc.py,qt/run_template.py,cocoa/run_template.py,./run.py,./pkg
 max-line-length = 120