diff --git a/pkgs/applications/science/logic/symbiyosys/default.nix b/pkgs/applications/science/logic/symbiyosys/default.nix
index e21c274370c..2047bb3fc9f 100644
--- a/pkgs/applications/science/logic/symbiyosys/default.nix
+++ b/pkgs/applications/science/logic/symbiyosys/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "symbiyosys-${version}";
-  version = "2018.09.12";
+  version = "2018.12.09";
 
   src = fetchFromGitHub {
     owner  = "yosyshq";
     repo   = "symbiyosys";
-    rev    = "e90bcb588e97118af0cdba23fae562fb0efbf294";
-    sha256 = "16nlimpdc3g6lghwqpyirgrr1d9mgk4wg3c06fvglzaicvjixnfr";
+    rev    = "0772456a15b5a474c3c90a06b48e46a67d8a6614";
+    sha256 = "00p2l1g9z8nnmkc57l1cfn9ignjjmxwnyaxj2xjd1fim4kzd5475";
   };
 
   buildInputs = [ python3 yosys ];