try some CI fixes

maybe need to workaround Issue jbaiter#27.
plomgrading · Aug 21, 2020 · 022aa33 · 022aa33
1 parent b00b345
commit 022aa33
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -11,7 +11,12 @@ python:
     - "3.3"
     - "3.4"
     - "3.5"
+    - "3.6"
+    - "3.7"
+    - "3.8"
     - "pypy"
     - "pypy3"
-install: pip install tox-travis
+install:
+    - pip install cffi   # issue #27?
+    - pip install tox-travis
 script: tox