diff --git a/pkgs/development/libraries/libraspberrypi/default.nix b/pkgs/development/libraries/libraspberrypi/default.nix
index bbe0b6145503..930869ca19cc 100644
--- a/pkgs/development/libraries/libraspberrypi/default.nix
+++ b/pkgs/development/libraries/libraspberrypi/default.nix
@@ -1,20 +1,22 @@
 { stdenv, cmake, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
-  name = "libraspberrypi";
-  version = "2020-05-28";
+  pname = "libraspberrypi";
+  version = "unstable-2020-11-30";
+
   src = fetchFromGitHub {
     owner = "raspberrypi";
     repo = "userland";
-    rev = "f97b1af1b3e653f9da2c1a3643479bfd469e3b74";
-    sha256 = "1r7n05rv96hqjq0rn0qzchmfqs0j7vh3p8jalgh66s6l0vms5mwy";
+    rev = "093b30bbc2fd083d68cc3ee07e6e555c6e592d11";
+    sha256 = "0n2psqyxlsic9cc5s8h65g0blblw3xws4czhpbbgjm58px3822d7";
   };
 
-  cmakeFlags = if (stdenv.targetPlatform.system == "aarch64-linux")
-    then "-DARM64=ON"
-    else "-DARM64=OFF";
-  preConfigure = ''cmakeFlags="$cmakeFlags -DVMCS_INSTALL_PREFIX=$out"'';
   nativeBuildInputs = [ cmake ];
+  cmakeFlags = [
+    (if (stdenv.targetPlatform.system == "aarch64-linux") then "-DARM64=ON" else "-DARM64=OFF")
+    "-DVMCS_INSTALL_PREFIX=$out"
+  ];
+
   meta = with stdenv.lib; {
     description = "Userland libraries for interfacing with Raspberry Pi hardware";
     homepage = "https://github.com/raspberrypi/userland";