diff --git a/pkgs/applications/science/logic/spass/default.nix b/pkgs/applications/science/logic/spass/default.nix
index 24da52b9d07c..2bb2b911d491 100644
--- a/pkgs/applications/science/logic/spass/default.nix
+++ b/pkgs/applications/science/logic/spass/default.nix
@@ -1,8 +1,11 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, bison, flex }:
 
 let
   baseVersion="3";
-  minorVersion="7";
+  minorVersion="9";
+
+  extraTools = "FLOTTER prolog2dfg dfg2otter dfg2dimacs dfg2tptp"
+    + " dfg2ascii dfg2dfg tptp2dfg dimacs2dfg pgen rescmp";
 in
 
 stdenv.mkDerivation rec {
@@ -11,16 +14,28 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "http://www.spass-prover.org/download/sources/spass${baseVersion}${minorVersion}.tgz";
-    sha256 = "1k5a98kr3vzga54zs7slwwaaf6v6agk1yfcayd8bl55q15g7xihk";
+    sha256 = "11cyn3kcff4r79rsw2s0xm6rdb8bi0kpkazv2b48jhcms7xw75qp";
   };
 
+  sourceRoot = ".";
+
+  nativeBuildInputs = [ bison flex ];
+
+  buildPhase = ''
+    make RM="rm -f" proparser.c ${extraTools} opt
+  '';
+  installPhase = ''
+    mkdir -p $out/bin
+    install -m0755 SPASS ${extraTools} $out/bin/
+  '';
+
   meta = with stdenv.lib; {
-    description = "An automated theorem preover for FOL";
+    description = "Automated theorem prover for first-order logic";
     maintainers = with maintainers;
     [
       raskin
     ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
     license = licenses.bsd2;
     downloadPage = "http://www.spass-prover.org/download/index.html";
   };