diff --git a/pkgs/development/compilers/go/2-dev.nix b/pkgs/development/compilers/go/2-dev.nix
index 44ee67ca8f6a..9af08dde19e8 100644
--- a/pkgs/development/compilers/go/2-dev.nix
+++ b/pkgs/development/compilers/go/2-dev.nix
@@ -35,8 +35,8 @@ let
 in
 
 stdenv.mkDerivation rec {
-  pname = "go";
-  version = "2";
+  pname = "go2-unstable";
+  version = "2020-12-08";
 
   src = fetchgit {
     url = https://go.googlesource.com/go;