diff --git a/pkgs/tools/misc/parallel/default.nix b/pkgs/tools/misc/parallel/default.nix
index 8097902b0d98..07326e7a8ed6 100644
--- a/pkgs/tools/misc/parallel/default.nix
+++ b/pkgs/tools/misc/parallel/default.nix
@@ -1,11 +1,11 @@
 { fetchurl, stdenv, perl, makeWrapper, procps }:
 
 stdenv.mkDerivation rec {
-  name = "parallel-20170422";
+  name = "parallel-20170522";
 
   src = fetchurl {
     url = "mirror://gnu/parallel/${name}.tar.bz2";
-    sha256 = "0afk1q8mqzz02h6imyykgi9gwk5gj08hzs6lwgd65ilj4slkh93s";
+    sha256 = "1k5wlcc0dr2fxna0vi48s0l6pvbyl4pbclbih4103f1155im23ca";
   };
 
   nativeBuildInputs = [ makeWrapper perl ];