diff --git a/modules/base/docker.nix b/modules/base/docker.nix
index 151c372..a95117e 100644
--- a/modules/base/docker.nix
+++ b/modules/base/docker.nix
@@ -14,7 +14,7 @@
 
   # Being a member of the docker group is effectively equivalent to being root,
   # but without the annoyance of having to type your sudo password all the time.
-  users.extraGroups.docker.members = ["caspervk"];
+  users.groups.docker.members = ["caspervk"];
 
   # Persist docker volumes
   environment.persistence."/nix/persist" = {
diff --git a/modules/base/users.nix b/modules/base/users.nix
index 1b3f145..6332ef7 100644
--- a/modules/base/users.nix
+++ b/modules/base/users.nix
@@ -19,7 +19,7 @@
         extraGroups = [
           "wheel" # allows sudo
           "video" # allows controlling brightness
-          # todo: systemd-journal, audio, input, power, nix ?
+          # TODO: systemd-journal, audio, input, power, nix ?
         ];
         uid = 1000;
         packages = with pkgs; [];
diff --git a/modules/desktop/network.nix b/modules/desktop/network.nix
index ba920fe..40a2c36 100644
--- a/modules/desktop/network.nix
+++ b/modules/desktop/network.nix
@@ -9,7 +9,7 @@
   };
 
   # Allow our user to configure the network
-  users.extraGroups.networkmanager.members = ["caspervk"];
+  users.groups.networkmanager.members = ["caspervk"];
 
   # Persist WiFi passwords and other network configuration
   environment.persistence."/nix/persist" = {
diff --git a/modules/desktop/virtd.nix b/modules/desktop/virtd.nix
index ed4812e..1a05463 100644
--- a/modules/desktop/virtd.nix
+++ b/modules/desktop/virtd.nix
@@ -15,7 +15,7 @@
   };
 
   # Allow our user to use libvird
-  users.extraGroups.libvirtd.members = ["caspervk"];
+  users.groups.libvirtd.members = ["caspervk"];
 
   # Persist libvirt data
   environment.persistence."/nix/persist" = {