diff --git a/pkgs/tools/networking/isync/default.nix b/pkgs/tools/networking/isync/default.nix
index d5695709a3c..47efe53c0a9 100644
--- a/pkgs/tools/networking/isync/default.nix
+++ b/pkgs/tools/networking/isync/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, openssl, pkgconfig, db }:
+{ fetchurl, stdenv, openssl, pkgconfig, db, cyrus_sasl }:
 
 stdenv.mkDerivation rec {
   name = "isync-1.2.0";
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "0n8fwvv88h7ps7qs122kgh1yx5308765fiwqav5h7m272vg7hf43";
   };
 
-  buildInputs = [ openssl pkgconfig db ];
+  buildInputs = [ openssl pkgconfig db cyrus_sasl ];
 
   meta = {
     homepage = http://isync.sourceforge.net/;