diff --git a/pkgs/development/compilers/gambit/default.nix b/pkgs/development/compilers/gambit/default.nix
index 99a4d6fc4d1f..7e17cee9abde 100644
--- a/pkgs/development/compilers/gambit/default.nix
+++ b/pkgs/development/compilers/gambit/default.nix
@@ -1,16 +1,25 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, openssl }:
 
 stdenv.mkDerivation rec {
   name    = "gambit-${version}";
-  version = "4.8.5";
-  devver  = "4_8_5";
+  version = "4.8.6";
+  devver  = "4_8_6";
 
   src = fetchurl {
     url    = "http://www.iro.umontreal.ca/~gambit/download/gambit/v4.8/source/gambit-v${devver}-devel.tgz";
-    sha256 = "02b5bm06k2qr0lvdwwsl0ygxs7n8410rrkq95picn4s02kxszqnq";
+    sha256 = "0j3ka76cfb007rlcc3nv5p1s6vh31cwp87hwwabawf16vs1jb7bl";
   };
 
-  configureFlags = [ "--enable-shared" "--enable-single-host" ];
+  configureFlags = [
+    "--enable-single-host"
+    "--enable-shared"
+    "--enable-absolute-shared-libs"
+    "--enable-c-opt=-O6" "--enable-gcc-opts" "--enable-inline-jumps"
+    "--enable-thread-system=posix" "--enable-dynamic-tls"
+    "--enable-openssl"
+  ];
+
+  buildInputs = [ openssl ];
 
   meta = {
     description = "Optimizing Scheme to C compiler";