diff --git a/pkgs/applications/science/logic/why3/default.nix b/pkgs/applications/science/logic/why3/default.nix
new file mode 100644
index 00000000000..71ff1cc7fb4
--- /dev/null
+++ b/pkgs/applications/science/logic/why3/default.nix
@@ -0,0 +1,22 @@
+{ fetchurl, stdenv, ocaml, ocamlPackages, coq }:
+
+stdenv.mkDerivation rec {
+  name    = "why3-${version}";
+  version = "0.83";
+
+  src = fetchurl {
+    url    = "https://gforge.inria.fr/frs/download.php/33490/${name}.tar.gz";
+    sha256 = "1jcs5vj91ppbgh4q4hch89b63wgakjhg35pm3r4jwhp377lnggya";
+  };
+
+  buildInputs = with ocamlPackages;
+    [ coq ocaml findlib lablgtk ocamlgraph zarith ];
+
+  meta = {
+    description = "why is a software verification platform";
+    homepage    = "http://why3.lri.fr/";
+    license     = stdenv.lib.licenses.lgpl21;
+    platforms   = stdenv.lib.platforms.linux;
+    maintainers = [ stdenv.lib.maintainers.thoughtpolice ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 601be9d3620..2c7fbe28469 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -10372,6 +10372,8 @@ let
 
   verifast = callPackage_i686 ../applications/science/logic/verifast {};
 
+  why3 = callPackage ../applications/science/logic/why3 {};
+
   yices = callPackage ../applications/science/logic/yices {};
 
   z3 = callPackage ../applications/science/logic/z3 {};