diff --git a/justfile b/justfile
index 55344e6..6f382cd 100644
--- a/justfile
+++ b/justfile
@@ -4,32 +4,32 @@ HOSTNAME  := `hostname -s`
 test:
   @alejandra . &> nixos-switch.log || ( cat nixos-switch.log && false)
   @rm -f nixos-switch.log
-  @colmena build --on {{HOSTNAME}}
+  @colmena --impure build --on {{HOSTNAME}}
 
 # Apply config on hostname
 switch hostname=(HOSTNAME):
-  @colmena exec --on {{hostname}} "locate home-manager-backup | sort -u | xargs rm -f"
-  @colmena apply --on {{HOSTNAME}}
+  @colmena --impure exec --on {{hostname}} "locate home-manager-backup | sort -u | xargs rm -f"
+  @colmena --impure apply --on {{HOSTNAME}}
 
 # Build and install the world!
 world:
-  @colmena exec "locate home-manager-backup | sort -u | xargs rm -f"
-  @colmena apply
+  @colmena --impure exec "locate home-manager-backup | sort -u | xargs rm -f"
+  @colmena --impure apply
 
 # Build and install the workstations
 workstation:
-  @colmena exec --on @workstation "locate home-manager-backup | sort -u | xargs rm -f"
-  @colmena apply --on @workstation
+  @colmena --impure exec --on @workstation "locate home-manager-backup | sort -u | xargs rm -f"
+  @colmena --impure apply --on @workstation
 
 # Build and install the servers
 server:
-  @colmena exec --on @server "locate home-manager-backup | sort -u | xargs rm -f"
-  @colmena apply --on @server
+  @colmena --impure exec --on @server "locate home-manager-backup | sort -u | xargs rm -f"
+  @colmena --impure apply --on @server
 
 # Build and install the webhosts
 web:
-  @colmena exec --on @web "locate home-manager-backup | sort -u | xargs rm -f"
-  @colmena apply --on @web
+  @colmena --impure exec --on @web "locate home-manager-backup | sort -u | xargs rm -f"
+  @colmena --impure apply --on @web
 
 # Build and run a vm FIXME
 vm:
@@ -52,18 +52,18 @@ clean hostname=(HOSTNAME):
   @echo "Cleaning old entries and store"
   @home-manager expire-generations "-5 days"
   @echo "Garbage Collection"
-  @colmena exec --on {{hostname}} nix-collect-garbage --quiet --log-format bar --no-build-output --delete-old
+  @colmena --impure exec --on {{hostname}} nix-collect-garbage --quiet --log-format bar --no-build-output --delete-old
   @echo "Store optimise"
-  @colmena exec --on {{hostname}} nix store optimise
+  @colmena --impure exec --on {{hostname}} nix store optimise
 
 # Clean up the world
 clean-world:
   @echo "Cleaning old entries and store"
-  @colmena exec 'home-manager expire-generations "-5 days"'
+  @colmena --impure exec 'home-manager expire-generations "-5 days"'
   @echo "Garbage Collection"
-  @colmena exec 'nix-collect-garbage --quiet --log-format bar --no-build-output --delete-old'
+  @colmena --impure exec 'nix-collect-garbage --quiet --log-format bar --no-build-output --delete-old'
   @echo "Store optimise"
-  @colmena exec 'nix store optimise'
+  @colmena --impure exec 'nix store optimise'
 
 # Push local changes to git
 push: