travis: remove tip and add 1.9
diff --git a/.travis.yml b/.travis.yml
index c81b17e..7ca251c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@
 
 go:
   - 1.8
-  - tip
+  - 1.9
 
 go_import_path: gopkg.in/src-d/go-git.v4
 
@@ -11,11 +11,6 @@
   - GIT_VERSION=v1.9.3
   - GIT_VERSION=v2.11.0
 
-matrix:
-  fast_finish: true
-  allow_failures:
-    - go: tip
-
 cache:
   directories:
   - $HOME/.git-dist
@@ -48,4 +43,4 @@
   - go vet ./...
 
 after_success:
-  - bash <(curl -s https://codecov.io/bash)
\ No newline at end of file
+  - bash <(curl -s https://codecov.io/bash)