Update .travis.yml (dbrgn#9)

jackton1 · web-flow · commit 060127aad110 · 2021-03-25T17:26:47.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,9 +1,12 @@
 language: python
 python:
     - 2.7
-    - 3.3
     - 3.4
     - 3.5
+    - 3.6
+    - 3.7
+    - 3.8
+    - 3.9
 install:
     - pip install -r requirements-dev.txt
 script:
