diff --git a/.travis.yml b/.travis.yml
index 55e4a72..0ef14cd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
 language: go
 go:
   # webgo is still compatible with 1.8, but the tests are importing versioned 
-  # modules which fails for older Go versions.
+  # modules which fails for older Go versions. And using `errors.Is` which was introduced in Go 1.13
   # - "1.8"
-  - "1.11"
+  - "1.13"
   - master
 
 before_install: