diff --git a/.travis.yml b/.travis.yml
index 33fc6388cf4e3a084d38d69cf71345a1b34fe5f1..430eb1af067978fbf14789cb3c95c752e797bc86 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,7 +24,7 @@ matrix:
   include:
     - env: NIX_CHANNEL=https://nixos.org/channels/nixpkgs-unstable
     - env: NIX_CHANNEL=https://nixos.org/channels/nixos-unstable
-    - env: NIX_CHANNEL=https://nixos.org/channels/nixos-20.03
+    - env: NIX_CHANNEL=https://nixos.org/channels/nixos-19.09
 
 install:
  - nix --version