diff --git a/pkgs/development/compilers/iasl/default.nix b/pkgs/development/compilers/iasl/default.nix
index e98d7cc27dbf..1e7a46e78072 100644
--- a/pkgs/development/compilers/iasl/default.nix
+++ b/pkgs/development/compilers/iasl/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "iasl";
-  version = "20191213";
+  version = "20200110";
 
   src = fetchurl {
     url = "https://acpica.org/sites/acpica/files/acpica-unix-${version}.tar.gz";
-    sha256 = "1ip684is3dplf7snkn024vv6bg3dv5msx8v7pz6x9lrnk3gk0j9h";
+    sha256 = "1cb6aa6acrixmdzvj9vv4qs9lmlsbkd27pjlz14i1kq1x3xn0gwx";
   };
 
   NIX_CFLAGS_COMPILE = "-O3";
diff --git a/pkgs/tools/system/acpica-tools/default.nix b/pkgs/tools/system/acpica-tools/default.nix
index 269b6a82bbca..a1c7527c46a4 100644
--- a/pkgs/tools/system/acpica-tools/default.nix
+++ b/pkgs/tools/system/acpica-tools/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "acpica-tools";
-  version = "20191018";
+  version = "20200110";
 
   src = fetchurl {
     url = "https://acpica.org/sites/acpica/files/acpica-unix-${version}.tar.gz";
-    sha256 = "0pz95fb1zvsj9238bg7a4vxl1svn5mnjg10sn5qvgr008q0v9782";
+    sha256 = "1cb6aa6acrixmdzvj9vv4qs9lmlsbkd27pjlz14i1kq1x3xn0gwx";
   };
 
   NIX_CFLAGS_COMPILE = "-O3";