CI: Require pip < 19.1 for Python 2.7 and 3.4

[m_librarian.git] / .travis.yml

diff --git a/.travis.yml b/.travis.yml
index bc2f57404d0864ddd5a4dd8ddd7ded7f74f31dc0..a5004c58dae2c315dc0e7e803b07046bec541eae 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,7 +34,7 @@ matrix:
     env: TOXENV=py37-flake8
 
 install:
-  - travis_retry pip install --upgrade pip setuptools tox ppu
+  - travis_retry pip install --upgrade "pip < 19.1" setuptools tox ppu
 
 script:
   - tox