diff --git a/tools/offline.ml b/tools/offline.ml
index a4aa0843..4e37feb0 100644
--- a/tools/offline.ml
+++ b/tools/offline.ml
@@ -11,14 +11,14 @@ let download ~base_url ~output =
   let uri =
     Uri.with_path (Uri.of_string base_url) "/management/keys/" |> Uri.to_string
   in
-  let wget = Cmd.(v "wget" % "-O" % output % uri) in
-  OS.Cmd.run wget
+  OS.Cmd.run Cmd.(v "curl" (* % "-s" *) % "-o" % output % "-X" % "GET" % uri)
 
 let upload ~base_url ~input =
   let open Bos in
   let uri =
     Uri.with_path (Uri.of_string base_url) "/management/keys/" |> Uri.to_string
   in
+  (*
   let wget =
     Cmd.(
       v "wget"
@@ -31,6 +31,18 @@ let upload ~base_url ~input =
       % uri)
   in
   OS.Cmd.run wget
+  *)
+  OS.Cmd.run
+    Cmd.(
+      v "curl"
+      % "-i"
+      % "-X"
+      % "POST"
+      % "-H"
+      % "Content-Type: application/json"
+      % "--data"
+      % ("@" ^ input)
+      % uri)
 
 let setup ~output =
   let output = Fpath.v output in