diff --git a/.travis.yml b/.travis.yml
index e9c11d746..5658f9c3e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,7 +26,7 @@ python:
 
 install:
     # Optimisation: build requirements as wheels, which get cached by Travis
-    - pip install "pip>=7.0" wheel
+    - pip install "pip>=9.0" wheel
     - pip install "setuptools>=38"
     - pip install tox-travis
     - pip install flake8