1 files changed, 3 insertions, 4 deletions
diff --git a/pkgs/development/tools/impl/default.nix b/pkgs/development/tools/impl/default.nix
index 223f3d425c92..88b8abd842f2 100644
--- a/pkgs/development/tools/impl/default.nix
+++ b/pkgs/development/tools/impl/default.nix
@@ -5,17 +5,16 @@
 
 buildGoPackage rec {
   pname = "impl-unstable";
-  version = "2018-02-27";
-  rev = "3d0f908298c49598b6aa84f101c69670e15d1d03";
+  version = "2019-11-19";
+  rev = "6b9658ad00c7fbd61a7b50c195754413f6c4142c";
 
   goPackagePath = "github.com/josharian/impl";
 
   src = fetchFromGitHub {
     inherit rev;
-
     owner = "josharian";
     repo = "impl";
-    sha256 = "0xpip20x5vclrl0by1760lg73v6lj6nmkbiazlskyvpkw44h8a7c";
+    sha256 = "1d4fvj7fgiykznx1z4fmcc06x5hsqp9wn62m5qm1ds8m0rjqaxwi";
   };
 
   goDeps = ./deps.nix;