diff --git a/autoload/vivify.vim b/autoload/vivify.vim
index 0e11f4b..6b75e69 100644
--- a/autoload/vivify.vim
+++ b/autoload/vivify.vim
@@ -4,16 +4,32 @@ let s:viv_url = 'http://localhost:' . ($VIV_PORT == '' ? '31622' : $VIV_PORT)
 " See here: https://stackoverflow.com/questions/74999614/difference-between-vims-job-start-function-and-neovims-jobstart-functi
 if has("nvim")
     let s:job_start = function("jobstart")
+
+    " job is job_id as returned from jobstart()
+    function! s:stdin_send_and_close(job, data)
+        call chansend(a:job, a:data)
+        call chanclose(a:job, 'stdin')
+    endfunction
 else
+    " job is job object as returned from job_start()
+    function! s:stdin_send_and_close(job, data)
+        let l:channel = job_getchannel(a:job)
+        call ch_sendraw(l:channel, a:data)
+        call ch_close_in(l:channel)
+    endfunction
+
     let s:job_start = function("job_start")
 endif
 
 function! s:post(data)
-    call s:job_start([
-        \ 'curl', '-X', 'POST', '-H', 'Content-type: application/json',
-        \ '--data', json_encode(a:data),
+    let l:job = s:job_start([
+        \ 'curl',
+        \ '-X', 'POST',
+        \ '-H', 'Content-type: application/json',
+        \ '--data', '@-',
         \ s:viv_url . '/viewer' . expand('%:p')
     \])
+    call s:stdin_send_and_close(l:job, json_encode(a:data))
 endfunction
 
 function! vivify#sync_content()