diff --git a/overlays/ddccontrol-db/0001-add-del41d9.patch b/overlays/ddccontrol-db/0001-add-del41d9.patch
new file mode 100644
index 0000000..df347a0
--- /dev/null
+++ b/overlays/ddccontrol-db/0001-add-del41d9.patch
@@ -0,0 +1,10 @@
+diff --git a/db/monitor/DEL41D9.xml b/db/monitor/DEL41D9.xml
+new file mode 100644
+index 0000000..51cf12c
+--- /dev/null
++++ b/db/monitor/DEL41D9.xml
+@@ -0,0 +1,4 @@
++<?xml version="1.0" encoding="utf-8"?>
++<monitor name="DELL S2721DGF" init="standard">
++  <include file="DEL41DA" />
++</monitor>
diff --git a/overlays/default.nix b/overlays/default.nix
index 90d6a6c..99c2dfc 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -18,8 +18,7 @@ _final: prev: {
 
   bl3auto = prev.pkgs.callPackage ../pkgs/bl3auto { inherit (prev.pkgs) lib buildGoModule fetchFromGitHub; };
 
-  waybar = prev.waybar.overrideAttrs (prevAttrs: {
-    buildInputs = prevAttrs.buildInputs ++ [ prev.wayland-protocols prev.libappindicator-gtk3 prev.libinput prev.jack2 ];
-    mesonFlags = prevAttrs.mesonFlags ++ [ "-Dexperimental=true" ];
+  ddccontrol-db = prev.ddccontrol-db.overrideAttrs (_finalAttrs: prevAttrs: {
+    patches = (prevAttrs.patches or [ ]) ++ [ ./ddccontrol-db/0001-add-del41d9.patch ];
   });
 }