Update Debian version

nikolaev-rd · web-flow · commit 44dd7c5300ee · 2019-04-09T17:01:47.000+03:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,7 +6,7 @@ services:
 before_install:
 - docker pull centos:6
 - docker pull centos:7
-- docker pull debian:7
+- docker pull debian:9
 
 script:
 - make test
