diff --git a/.travis.yml b/.travis.yml
index 59734dd..a0d7056 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,6 @@ elixir:
 otp_release:
   - 19.0
   - 20.0
-  - 21.0
+  - 21.0.1
 sudo: false
 script: mix test