diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 80427d0..fd4ec71 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -17,8 +17,6 @@ jobs:
       matrix:
         channel:
           - nixos-unstable
-          - nixos-24.05
-          - nixos-24.11
           - nixos-25.05
         system:
           - aarch64-linux
@@ -66,8 +64,6 @@ jobs:
       matrix:
         channel:
           - nixos-unstable
-          - nixos-24.05
-          - nixos-24.11
           - nixos-25.05
     runs-on: ubuntu-latest
     steps:
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 39638db..baed4d5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,6 +10,4 @@ build:
       - NIXPKGS_CHANNEL: nixos-unstable
         IMAGE_TAG: latest
       - NIXPKGS_CHANNEL:
-          - nixos-24.05
-          - nixos-24.11
           - nixos-25.05
diff --git a/README.md b/README.md
index 3b9cbe2..5da449c 100644
--- a/README.md
+++ b/README.md
@@ -39,8 +39,6 @@ nixpkgs channel describes.
 
 | Channel        | Image Tag   | Description                                       |
 | ---            | ---         | ---                                               |
-| nixos-24.05    | nixos-24.05 | only minor versions that include security updates |
-| nixos-24.11    | nixos-24.11 | only minor versions that include security updates |
 | nixos-25.05    | nixos-25.05 | only minor versions that include security updates |
 | nixos-unstable | latest      | latest and greatest, major versions might change  |
 
diff --git a/images/devenv/default.nix b/images/devenv/default.nix
index e562ce2..c0e6aef 100644
--- a/images/devenv/default.nix
+++ b/images/devenv/default.nix
@@ -3,7 +3,7 @@
 }:
 (docker-nixpkgs.nix.override {
   # only available since 24.05
-  extraContents = if devenv == null then [] else [ devenv ];
+  extraContents = [ devenv ];
 }).overrideAttrs (prev: {
   meta = (prev.meta or { }) // {
     description = "Nix and devenv image";