diff --git a/.travis.yml b/.travis.yml
index 5d97930..230b5f3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ go:
   - 1.2
   - 1.3
   - 1.4
+  - 1.5
   - tip
 before_install:
   - go get golang.org/x/tools/cmd/vet
diff --git a/README.md b/README.md
index f27cb82..f879be0 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ config := oauth1.Config{
 
     Receive the callback from the OAuth1 provider in a handler.
 
-    ```
+    ```go
     requestToken, verifier, err := oauth1.ParseAuthorizationCallback(req)
     // handle err
     ```