diff --git a/lib/core.js b/lib/core.js
index 66e395d40..5590e8b58 100644
--- a/lib/core.js
+++ b/lib/core.js
@@ -58,6 +58,8 @@ var Archiver = function(format, options) {
   };
 
   this._streams = [];
+
+  this._loggedBulkDeprecation = false;
 };
 
 inherits(Archiver, Transform);
@@ -555,6 +557,16 @@ Archiver.prototype.append = function(source, data) {
  * @return {this}
  */
 Archiver.prototype.bulk = function(mappings) {
+  if (!this._loggedBulkDeprecation) {
+    this._loggedBulkDeprecation = true;
+    var warning = 'Archiver.bulk() deprecated since 0.21.0';
+    if (typeof process !== 'undefined' && typeof process.emitWarning !== 'undefined') {
+      process.emitWarning(warning, 'DeprecationWarning');
+    } else {
+      console.warn(warning);
+    }
+  }
+
   if (this._state.finalize || this._state.aborted) {
     this.emit('error', new Error('bulk: queue closed'));
     return this;