diff --git a/pkgs/development/compilers/gerbil/default.nix b/pkgs/development/compilers/gerbil/default.nix
index 6fa9fcc3de8..e0f4ca4324f 100644
--- a/pkgs/development/compilers/gerbil/default.nix
+++ b/pkgs/development/compilers/gerbil/default.nix
@@ -1,12 +1,12 @@
 { stdenv, callPackage, fetchurl, gambit }:
 
 callPackage ./build.nix {
-  version = "0.12-RELEASE";
-  git-version = "0.12";
+  version = "0.13";
+  git-version = "0.13";
   GAMBIT = gambit;
   SRC = fetchurl {
-    url = "https://github.com/vyzo/gerbil/archive/v0.12.tar.gz";
-    sha256 = "0nigr3mgrzai57q2jqac8f39zj8rcmic3277ynyzlgm8hhps71pq";
+    url = "https://github.com/vyzo/gerbil/archive/v0.13.tar.gz";
+    sha256 = "1qs0vdq2lgxlpw20s8jzw2adx1xk9wb3w2m4a8vp6bb8hagmfr5l";
   };
   inherit stdenv;
 }