diff --git a/default.nix b/default.nix
index a8d2f13199832ce6b0b5370745dd5f7adaaf0098..8a7a911a2707ef7a56f3c2aac7193fb7ca1fdf8a 100644
--- a/default.nix
+++ b/default.nix
@@ -51,7 +51,7 @@ let self = rec {
       (python3.withPackages 
         (ps: with ps; with python3Packages; [jupyter ipython pandas numpy psutil matplotlib plotly pip tabulate pytz isodate ordered-set yattag])
       )
-      wget
+      curl
       batmen-tools
       rsync # to synchronize directory
     ];
diff --git a/scripts/prepare_workload.sh b/scripts/prepare_workload.sh
index 62390ed24a6d43085d8aa6eac4e29098e45f01b2..c9d1228fdc543ffbcfc6604b1ad9fad78b8c3d9c 100755
--- a/scripts/prepare_workload.sh
+++ b/scripts/prepare_workload.sh
@@ -1,8 +1,6 @@
 #!/bin/bash
 #cut the workload for our experiments
-wget https://www.cs.huji.ac.il/labs/parallel/workload/l_metacentrum2/METACENTRUM-2013-3.swf.gz \
-      --no-check-certificate -nc -P workload workload/METACENTRUM-2013-3.swf.gz;
-gunzip workload/METACENTRUM-2013-3.swf.gz;
+curl -L -o - http://www.cs.huji.ac.il/labs/parallel/workload/l_metacentrum2/METACENTRUM-2013-3.swf.gz | gunzip > workload/METACENTRUM-2013-3.swf
 jun1=44578794;
 nov30=60393593;
 nb_hour=15;