diff --git a/.travis.yml b/.travis.yml
index 6054dfb..c09cf8b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,11 @@
 language: elixir
 elixir:
   - 1.5.3
-  - 1.6.5
-  - 1.7.0
+  - 1.6.6
+  - 1.7.1
 otp_release:
-  - 19.2
-  - 20.3.1
-  - 21.0.3
+  - 19.3.6
+  - 20.3.8
+  - 21.0.4
 script:
   - "MIX_ENV=test mix do deps.get, compile, test"