diff --git a/.github/workflows/tox.yml b/.github/workflows/tox.yml
index 611a0938..ca0cb26f 100644
--- a/.github/workflows/tox.yml
+++ b/.github/workflows/tox.yml
@@ -7,6 +7,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
       - run: pip install --upgrade pip
+      - run: pip install tox
       - run: tox -e lint
 
   tox-docs-lint:
@@ -15,6 +16,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
       - run: pip install --upgrade pip
+      - run: pip install tox
       - run: tox -e docs-lint
 
   tox-pycodestyle:
@@ -23,6 +25,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
       - run: pip install --upgrade pip
+      - run: pip install tox
       - run: tox -e pycodestyle
 
   tox: