diff --git a/.travis.yml b/.travis.yml
index b9c70459..70756a43 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ addons:
     - libgmp-dev
 
 env:
-- GHCVER=8.4.1
+- GHCVER=8.4.3
 
 install:
  # Download and unpack the stack executable