diff --git a/archachatina.nix b/archachatina.nix
index 3794b9a..9072d84 100644
--- a/archachatina.nix
+++ b/archachatina.nix
@@ -13,6 +13,7 @@
       ./atmega.nix
       ./v4l2loopback.nix
       ./huion.nix
+      ./rtl8761b.nix
     ];
 
   environment.etc."lvm/lvm.conf".text = ''
diff --git a/rtl8761b.nix b/rtl8761b.nix
new file mode 100644
index 0000000..5f3351a
--- /dev/null
+++ b/rtl8761b.nix
@@ -0,0 +1,27 @@
+{ config, pkgs, ... }:
+
+{
+
+  hardware.firmware = with pkgs; [ (stdenv.mkDerivation rec {
+    name = "rtl8761b-fw";
+
+    fw = fetchurl {
+      url = "https://github.com/Realtek-OpenSource/android_hardware_realtek/raw/e58b611f34f2f5ff57bb0d8cdf1b2e4751e3ccbd/bt/rtkbt/Firmware/BT/rtl8761b_fw";
+      sha256 = "0b59a1f2422c006837c4b5e46b59d49bfdbca1defb958adbbc0d57ebdc19cc82";
+    };
+    config = fetchurl {
+      url = "https://github.com/Realtek-OpenSource/android_hardware_realtek/raw/e58b611f34f2f5ff57bb0d8cdf1b2e4751e3ccbd/bt/rtkbt/Firmware/BT/rtl8761b_config";
+      sha256 = "aa86a092ee58e96256331d5c28c199ceaadec434460e98e7dea20e411e1aa570";
+    };
+
+    unpackPhase = ":";
+    buildPhase = ''
+      dn=$out/lib/firmware
+      mkdir -p $dn/rtl_bt
+      ln -s ${fw} $dn/rtl_bt/rtl8761b_fw.bin
+      ln -s ${config} $dn/rtl_bt/rtl8761b_config.bin
+    '';
+    installPhase = ":";
+  }) ];
+
+}