diff --git a/.github/workflows/ci_cron_weekly.yml b/.github/workflows/ci_cron_weekly.yml
index 19b7ca6e96..4259a0c98e 100644
--- a/.github/workflows/ci_cron_weekly.yml
+++ b/.github/workflows/ci_cron_weekly.yml
@@ -22,7 +22,7 @@ jobs:
     - name: Install base dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install "tox<4"
+        python -m pip install tox
     - name: Check links in docs using tox
       run: tox -e linkcheck
 
@@ -42,6 +42,6 @@ jobs:
     - name: Install base dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install "tox<4"
+        python -m pip install tox
     - name: Test with tox
       run: tox -e py39-test-devdeps
diff --git a/.github/workflows/ci_workflows.yml b/.github/workflows/ci_workflows.yml
index 77d5f74d67..9c6e8734bf 100644
--- a/.github/workflows/ci_workflows.yml
+++ b/.github/workflows/ci_workflows.yml
@@ -79,7 +79,7 @@ jobs:
       with:
         python-version: ${{ matrix.python }}
     - name: Install base dependencies
-      run: python -m pip install --upgrade pip "tox<4"
+      run: python -m pip install --upgrade pip tox
     - name: Test/run with tox
       run: tox -e ${{ matrix.toxenv }} -- ${{ matrix.toxposargs }}
     - name: Upload coverage to codecov