diff --git a/.travis.yml b/.travis.yml
index 2d3ca93..7ac3f0a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ env:
     - PYTEST="pytest>3.7.0,<4.0.0"
     - PYTEST="pytest>=4.0.0,<5.0.0"
     - PYTEST="pytest>=5.0.0,<6.0.0"
+    - PYTEST="pytest>=6.0.0,<7.0.0"
 
 cache:
   directories: