diff --git a/pkgs/development/compilers/bluespec/default.nix b/pkgs/development/compilers/bluespec/default.nix
index defe78d7c31..cfbec681e8a 100644
--- a/pkgs/development/compilers/bluespec/default.nix
+++ b/pkgs/development/compilers/bluespec/default.nix
@@ -27,13 +27,13 @@ let
   ghcWithPackages = ghc.withPackages (g: (with g; [old-time regex-compat syb split ]));
 in stdenv.mkDerivation rec {
   pname = "bluespec";
-  version = "unstable-2020.11.04";
+  version = "unstable-2021.02.14";
 
   src = fetchFromGitHub {
       owner  = "B-Lang-org";
       repo   = "bsc";
-      rev    = "103357f32cf63f2ca2b16ebc8e2c675ec5562464";
-      sha256 = "0iikzx0fxky0fmc31lyxfldy1wixr2mayzcn24b8d76wd4ix1vk3";
+      rev    = "c085ecd807d85f31d102d8bec71f5c28dc96b31d";
+      sha256 = "0c86gwhrarw78cr9c9slb9vij6kcwx3x281kbqji96qqzs0dfb32";
     };
 
   enableParallelBuilding = true;