diff --git a/.travis.yml b/.travis.yml
index 6a4d5aa..2b0697a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,12 @@
 language: erlang
 script: "make test"
 otp_release:
+  - 21.2
+  - 21.0
+  - 20.0
   - 19.0
   - 18.0
   - 17.4
-  - 17.1
   - 17.0
   - R16B
   - R15B03