diff --git a/.travis.yml b/.travis.yml
index 05893e5..673fb63 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,8 @@
 env:
  - CABALVER=1.22 GHCVER=7.10.3
  - CABALVER=1.24 GHCVER=8.0.2
- - CABALVER=2.0 GHCVER=8.2.1
+ - CABALVER=2.0 GHCVER=8.2.2
+ - CABALVER=2.0 GHCVER=8.4.3
 
 # Note: the distinction between `before_install` and `install` is not important.
 before_install: