diff --git a/pkgs/applications/science/logic/picosat/default.nix b/pkgs/applications/science/logic/picosat/default.nix
index fb5acc64c4d..e2b347798c2 100644
--- a/pkgs/applications/science/logic/picosat/default.nix
+++ b/pkgs/applications/science/logic/picosat/default.nix
@@ -2,15 +2,14 @@
 
 stdenv.mkDerivation rec {
   name    = "picosat-${version}";
-  version = "960";
+  version = "965";
 
   src = fetchurl {
     url = "http://fmv.jku.at/picosat/${name}.tar.gz";
-    sha256 = "05z8cfjk84mkna5ryqlq2jiksjifg3jhlgbijaq36sbn0i51iczd";
+    sha256 = "0m578rpa5rdn08d10kr4lbsdwp4402hpavrz6n7n53xs517rn5hm";
   };
 
-  dontAddPrefix = true;
-  configureFlags = "--shared";
+  configurePhase = "./configure.sh --shared";
 
   installPhase = ''
    mkdir -p $out/bin $out/lib $out/include/picosat