diff --git a/systems/charlie/default.nix b/systems/charlie/default.nix
index 263699e..212a1f6 100644
--- a/systems/charlie/default.nix
+++ b/systems/charlie/default.nix
@@ -2,7 +2,7 @@
 
 pkgs.callPackage ../../coreboot.nix {
   # last known good
-  rev = "d8bc5c127ad13ed0475bbf7465f6ba56a5fa34ee";
+  rev = "4bd69273882c66667590f098f2b9bb916b6c1a44";
   sources = pkgs.callPackage ./sources.nix { };
 
   conf = {
diff --git a/systems/charlie/sources.nix b/systems/charlie/sources.nix
index 0a2744b..2e0d7ef 100644
--- a/systems/charlie/sources.nix
+++ b/systems/charlie/sources.nix
@@ -1,6 +1,6 @@
 { fetchurl }:
-{ rev = "d8bc5c127ad13ed0475bbf7465f6ba56a5fa34ee";
-  sha256 = "0hg8xrmvvqx4kh5zq64nx8a7x1vvnw4lsimj12nwgvszmnhvsvmq";
+{ rev = "4bd69273882c66667590f098f2b9bb916b6c1a44";
+  sha256 = "162m24zlh9lwi4v9bi9gq6s37gkb96l0iyznd1l8y93iyzfcaqg9";
   toolchain = [
     (fetchurl {
       url = "https://ftpmirror.gnu.org/gmp/gmp-6.1.2.tar.xz";
@@ -23,12 +23,12 @@
       sha256 = "1grcf8jaw3i0bk6f9xfzxw3qfgmn6fgkr108isdkbh1y3hnzqrmb";
     })
     (fetchurl {
-      url = "https://ftpmirror.gnu.org/gdb/gdb-9.2.tar.xz";
-      sha256 = "0mf5fn8v937qwnal4ykn3ji1y2sxk0fa1yfqi679hxmpg6pdf31n";
+      url = "https://ftpmirror.gnu.org/gdb/gdb-8.3.1.tar.xz";
+      sha256 = "1i2pjwaafrlz7wqm40b4znr77ai32rjsxkpl2az38yyarpbv8m8y";
     })
     (fetchurl {
-      url = "https://acpica.org/sites/acpica/files/acpica-unix2-20200528.tar.gz";
-      sha256 = "01ajxnz9dpnvdbib7yv20dw21a1yyfgwiw3whg0xi57cf4app2md";
+      url = "https://acpica.org/sites/acpica/files/acpica-unix2-20200110.tar.gz";
+      sha256 = "1hb4g6r7w8s4bhlkk36fmb4qxghnrwvad7f18cpn6zz0b4sjs7za";
     })
     (fetchurl {
       url = "https://www.python.org/ftp/python/3.8.1/Python-3.8.1.tar.xz";
@@ -54,6 +54,10 @@
       url = "https://releases.llvm.org/9.0.0/clang-tools-extra-9.0.0.src.tar.xz";
       sha256 = "045cldmcfd8s33wyjlviifgpnw52yqicd6v4ysvdg4i96p78c77a";
     })
+    (fetchurl {
+      url = "https://ftpmirror.gnu.org/make/make-4.2.1.tar.bz2";
+      sha256 = "12f5zzyq2w56g95nni65hc0g5p7154033y2f3qmjvd016szn5qnn";
+    })
     (fetchurl {
       url = "https://cmake.org/files/v3.16/cmake-3.16.2.tar.gz";
       sha256 = "1ag65ignli58kpmji6gjhj8xw4w1qdr910i99hsvx8hcqrp7h2cc";
@@ -63,4 +67,4 @@
       sha256 = "1g409sr1kj7v1089s9kv0i4azvddkcwcypnbakfryyi71b3jdz9l";
     })
   ];
-}
+}
\ No newline at end of file