diff --git a/pkgs/development/tools/icestorm/default.nix b/pkgs/development/tools/icestorm/default.nix
index b9d72084518b..d330ad5d548d 100644
--- a/pkgs/development/tools/icestorm/default.nix
+++ b/pkgs/development/tools/icestorm/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "icestorm-${version}";
-  version = "2017.11.05";
+  version = "2017.12.06";
 
   src = fetchFromGitHub {
     owner  = "cliffordwolf";
     repo   = "icestorm";
-    rev    = "3ba18d001754de563ab0baa2a1c8eecbe63ef121";
-    sha256 = "1c7yv91xi4vx0130xn2zq74gfjbf7fhm2q4fma9xgwj5xpdy8rmn";
+    rev    = "14b44ca866665352e7146778bb932e45b5fdedbd";
+    sha256 = "18qy7gylnydgzmqry1b4r0ilm6lkjdcyn0wj03syxdig9dbjiacm";
   };
 
   buildInputs = [ python3 libftdi ];