diff --git a/pkgs/development/compilers/yosys/default.nix b/pkgs/development/compilers/yosys/default.nix
index 275a25c84959..1afeae73f2f1 100644
--- a/pkgs/development/compilers/yosys/default.nix
+++ b/pkgs/development/compilers/yosys/default.nix
@@ -8,14 +8,14 @@ with builtins;
 
 stdenv.mkDerivation rec {
   name = "yosys-${version}";
-  version = "2018.10.17";
+  version = "2019.01.08";
 
   srcs = [
     (fetchFromGitHub {
       owner  = "yosyshq";
       repo   = "yosys";
-      rev    = "yosys-0.8";
-      sha256 = "1qwbp8gynlklawzvpa4gdn2x0hs8zln0s3kxjqkhfcjfxffdcpvv";
+      rev    = "2a2e0a4722ded7628b71f436b94a06aebd57bb62";
+      sha256 = "19wzh7yssk90s58l2f89m0q5bjjrjpkhvikf5zc0563wccvl712c";
       name   = "yosys";
     })
 
@@ -25,8 +25,8 @@ stdenv.mkDerivation rec {
     (fetchFromGitHub {
       owner  = "berkeley-abc";
       repo   = "abc";
-      rev    = "ae6716b064c842f45109a88e84dca71fe4cc311f";
-      sha256 = "0g39k16dmrl6q73q39yr5yd9r4rcliz5zxzbnwzh29z9xwi6ipw8";
+      rev    = "2ddc57d8760d94e86699be39a628178cff8154f8";
+      sha256 = "0da7nnnnl9cq2r7s301xgdc8nlr6hqmqpvd9zn4b58m125sp0scl";
       name   = "yosys-abc";
     })
   ];