diff --git a/.travis.yml b/.travis.yml
index 5ea321af..8b190220 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -62,7 +62,7 @@ matrix:
     - <<: *_unittest
       env:
         - DESCRIPTION="Unit Tests"
-      go: 1.9
+      go: 1.11
     - <<: *_unittest
       env:
         - DESCRIPTION="Tests + goreleaser + cover"
@@ -87,9 +87,9 @@ matrix:
 # See https://github.com/travis-ci/travis-ci/issues/6126
     - <<: *_build
       env:
-        - GOOS="windows"
+        - GOOS="openbsd"
       before_script:
-        - export GOOS="windows"
+        - export GOOS="openbsd"
         - go env
     - <<: *_build
       env:
diff --git a/README.md b/README.md
index 90bff3be..1324d73a 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Try [a binary release](https://github.com/osrg/gobgp/releases/latest).
 
 ## To start developing GoBGP
 
-You need a working [Go environment](https://golang.org/doc/install) (1.9 or newer).
+You need a working [Go environment](https://golang.org/doc/install) (1.10 or newer).
 
 ```bash
 $ go get -u github.com/golang/dep/cmd/dep