diff --git a/.travis.yml b/.travis.yml
index 8aa64cc..e16e61f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,7 @@ language: erlang
 script: "make test"
 otp_release:
   - 23.1
+  - 23.0
   - 22.3
   - 21.3
   - 20.3