diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 4cb8d2e..59c483f 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -17,8 +17,8 @@ jobs:
       matrix:
         channel:
           - nixos-unstable
-          - nixos-25.05
           - nixos-25.11
+          - nixos-26.05
         system:
           - aarch64-linux
           - x86_64-linux
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5cfe8be..1906022 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,5 +10,5 @@ build:
       - NIXPKGS_CHANNEL: nixos-unstable
         IMAGE_TAG: latest
       - NIXPKGS_CHANNEL:
-          - nixos-25.05
           - nixos-25.11
+          - nixos-26.05
diff --git a/README.md b/README.md
index ebc803a..a7fd7e4 100644
--- a/README.md
+++ b/README.md
@@ -39,8 +39,8 @@ nixpkgs channel describes.
 
 | Channel        | Image Tag   | Description                                       |
 | ---            | ---         | ---                                               |
-| nixos-25.05    | nixos-25.05 | only minor versions that include security updates |
 | nixos-25.11    | nixos-25.11 | only minor versions that include security updates |
+| nixos-26.05    | nixos-26.05 | only minor versions that include security updates |
 | nixos-unstable | latest      | latest and greatest, major versions might change  |
 
 ## List of images