diff --git a/pkgs/development/compilers/owl-lisp/default.nix b/pkgs/development/compilers/owl-lisp/default.nix
index 4e2f8b2af5b4..ee076acd8b17 100644
--- a/pkgs/development/compilers/owl-lisp/default.nix
+++ b/pkgs/development/compilers/owl-lisp/default.nix
@@ -1,16 +1,18 @@
-{ stdenv, fetchFromGitHub, coreutils }:
+{ stdenv, fetchFromGitHub, coreutils, which }:
 
 stdenv.mkDerivation rec {
   name    = "owl-lisp-${version}";
-  version = "0.1.14";
+  version = "0.1.15";
 
   src = fetchFromGitHub {
     owner  = "aoh";
     repo   = "owl-lisp";
     rev    = "v${version}";
-    sha256 = "1rr0icprna3zs834q1pj4xy21cql3pcfknfkqipq01rhnl2893sz";
+    sha256 = "0pczmra2x6icyz6b6g66pp5ij83cq4wszg0ssw8qm7a5314kxkq4";
   };
 
+  nativeBuildInputs = [ which ];
+
   prePatch = ''
     substituteInPlace Makefile --replace /usr $out
 
@@ -19,7 +21,7 @@ stdenv.mkDerivation rec {
     done
   '';
 
-  # tests are already run as part of the compilation process
+  # tests are run as part of the compilation process
   doCheck = false;
 
   meta = with stdenv.lib; {