diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d678383..8c14c07 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -31,7 +31,7 @@ jobs:
         nixPath:
           - nixpkgs=channel:nixos-unstable
           - nixpkgs=channel:nixpkgs-unstable
-          - nixpkgs=channel:nixos-20.09
+          - nixpkgs=channel:nixos-21.05
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository