diff --git a/.travis.yml b/.travis.yml
index 25095f3..235ddb0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,6 @@ language: go
 sudo: false
 go:
 - 1.13.x
-- 1.x
 deploy:
   provider: releases
   api_key:
diff --git a/README.md b/README.md
index 6bf656c..6572a80 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ certstrap can init multiple certificate authorities to sign certificates with.
 
 ### Building
 
-certstrap must be built with Go 1.4+. You can build certstrap from source:
+certstrap must be built with Go 1.13+. You can build certstrap from source:
 
 ```
 $ git clone https://github.com/square/certstrap