Build with a larger selection of protobuf versions

mvz · mvz · commit 5e873c97a1f9 · 2019-12-01T11:49:02.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -27,6 +27,8 @@ rvm:
 env:
   - PROTOBUF_VERSION=2.6.1
   - PROTOBUF_VERSION=3.0.0
+  - PROTOBUF_VERSION=3.6.0
+  - PROTOBUF_VERSION=3.11.0
 matrix:
   allow_failures:
     - rvm: rbx-2
