diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ad9a5779718..a0a0b5f0e10 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -105,7 +105,7 @@ jobs:
         with:
           python-version: ${{ matrix.python }}
 
-      - run: pip install tox 'virtualenv<20'
+      - run: pip install tox
 
       # Main check
       - name: Run unit tests
@@ -163,7 +163,7 @@ jobs:
           $acl.AddAccessRule($rule)
           Set-Acl "R:\Temp" $acl
 
-      - run: pip install tox 'virtualenv<20'
+      - run: pip install tox
         env:
           TEMP: "R:\\Temp"
 
diff --git a/tools/requirements/tests.txt b/tools/requirements/tests.txt
index ee453e07302..32d4870b45d 100644
--- a/tools/requirements/tests.txt
+++ b/tools/requirements/tests.txt
@@ -7,7 +7,7 @@ pytest-rerunfailures
 pytest-xdist
 scripttest
 setuptools
-virtualenv < 20.0
+git+https://github.com/pypa/virtualenv@legacy
 werkzeug
 wheel
 toml