diff --git a/.travis.yml b/.travis.yml
index 1a1d3e2..cc0feff 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ branches:
 install:
   - python -m pip install --upgrade pip --force-reinstall
   - pip install setuptools==59.5.0
+  - pip install pluggy --upgrade
   - pip install six --upgrade
   - pip install -r requirements.txt