diff --git a/.travis.yml b/.travis.yml
index 825dc3f..ae719be 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,7 @@
 language: go
 
 go:
-  - 1.0
-  - 1.1
   - 1.2
   - 1.3
+  - 1.4
   - tip
diff --git a/uniuri.go b/uniuri.go
index e9fa604..bb9eab9 100644
--- a/uniuri.go
+++ b/uniuri.go
@@ -78,5 +78,4 @@ func NewLenChars(length int, chars []byte) string {
 			}
 		}
 	}
-	panic("unreachable")
 }