diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 843593c..c4bdcea 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,21 +1,21 @@
 nixos-intern:
   image: nixos/nix
   variables:
-    NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.03.tar.gz"
+    NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.09.tar.gz"
   script:
     - nix-build tests/intern.nix
 
 nixos-extern:
   image: nixos/nix
   variables:
-    NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.03.tar.gz"
+    NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.09.tar.gz"
   script:
     - nix-build tests/extern.nix
 
 nixos-clamav:
   image: nixos/nix
   variables:
-    NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.03.tar.gz"
+    NIX_PATH: "nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/nixos-18.09.tar.gz"
   script:
     - nix-build tests/clamav.nix