Fix travis build for python 3.6 failing (aleju#664)

This fixes a build error in python 3.6 in travis.
ZhouShengbao · May 17, 2020 · 7d2bc50 · 7d2bc50
1 parent 8148930
commit 7d2bc50
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -26,6 +26,9 @@ python:
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -qq -y python-virtualenv
+  # otherwise imagecodecs fails to build on py3.6,
+  # see https://github.com/scikit-image/scikit-image/issues/4673
+  - pip install --upgrade pip
 
 install:
 # TODO why was this deactivated?