diff --git a/.gitea/workflows/build-dev.yml b/.gitea/workflows/build-dev.yml
index 15954e3..62d567a 100644
--- a/.gitea/workflows/build-dev.yml
+++ b/.gitea/workflows/build-dev.yml
@@ -49,14 +49,14 @@ jobs:
       - name: Build dev VM
         run: |
           . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
-          nix build -L .#nixosConfigurations.radiantwavekiosk-dev.config.system.build.toplevel
+          nix build -L --impure .#nixosConfigurations.radiantwavekiosk-dev.config.system.build.toplevel
 
         # If the closure builds, it's valid, even if incorrect and something is wrong.
         # That's why we build the ISO next, even for the dev branch, for testing
       - name: Build dev ISO
         run: |
           . /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh
-          nix build -L .#nixosConfigurations.dev-iso.config.system.build.isoImage
+          nix build -L --impure .#nixosConfigurations.dev-iso.config.system.build.isoImage
           cp -rL result/iso/*.iso /ssd/radiantwave/build/radiantwave-kiosk-iso-dev-$(date +%Y-%m-%d_%H-%M-%S).iso
 
       - name: Commit updated flake.lock