Test on newer releases

diff --git a/.travis.yml b/.travis.yml
index 86fa0b6..04f76dd 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,8 +6,18 @@ language:
     erlang
 
 otp_release:
+    - 22.1
+    - 22.0
+    - 21.3
+    - 21.2
+    - 21.1
+    - 21.0
+    - 20.3
+    - 19.3
+    - 18.3
     - 18.1
     - 18.0
+    - 17.5
     - 17.0
     - R16B02