diff --git a/lib/pkgs/default.nix b/lib/pkgs/default.nix
index 6e14e1f1..213d23d2 100644
--- a/lib/pkgs/default.nix
+++ b/lib/pkgs/default.nix
@@ -44,6 +44,8 @@ in {
           then "Astal-3.0"
           else if package.name == "astal-4.0.0"
           then "Astal-4.0"
+          else if package.pname == "gtk4"
+          then "Gtk-4.0"
           else (concatMapStrings capitalise (splitString "-" package.pname)) + "-0.1";
       })
       packages;
diff --git a/modules/ags/packages.nix b/modules/ags/packages.nix
index 3b15d58d..a6f8bc16 100644
--- a/modules/ags/packages.nix
+++ b/modules/ags/packages.nix
@@ -44,7 +44,7 @@ in {
             "gjs"
           ]
         )
-        ++ [gtk-session-lock.packages.${pkgs.system}.default];
+        ++ [gtk-session-lock.packages.${pkgs.system}.default pkgs.gtk4];
 
       lockPkg = pkgs.writeShellApplication {
         name = "lock";