diff --git a/.travis.yml b/.travis.yml
index 430ec65e..16dafe0c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,6 +29,9 @@ env:
 
   - TOX_ENV=coverage
 install:
+  # note: pip>=8.0.0 does not work on Python 3.2 but we want to test on py32
+  # note: virtualenv>=14.0.0 bundles newer version of pip that does not work on
+  #       py32
   - pip install -U 'tox==2.2.1' 'pip<8.0.0'
 script:
   - tox -e $TOX_ENV