diff --git a/warcprox/dedup.py b/warcprox/dedup.py
index ec03c7c..f979d97 100644
--- a/warcprox/dedup.py
+++ b/warcprox/dedup.py
@@ -41,14 +41,16 @@ class DedupableMixin(object):
     def __init__(self, options=warcprox.Options()):
         self.min_text_size = options.dedup_min_text_size
         self.min_binary_size = options.dedup_min_binary_size
+        self.dedup_only_with_bucket = options.dedup_only_with_bucket
 
     def should_dedup(self, recorded_url):
         """Check if we should try to run dedup on resource based on payload
         size compared with min text/binary dedup size options.
-        `dedup-bucket` is required in Warcprox-Meta to perform dedup.
+        When we use option --dedup-only-with-bucket, `dedup-bucket` is required
+        in Warcprox-Meta to perform dedup.
         Return Boolean.
         """
-        if "dedup-bucket" not in recorded_url.warcprox_meta:
+        if self.dedup_only_with_bucket and "dedup-bucket" not in recorded_url.warcprox_meta:
             return False
         if recorded_url.is_text():
             return recorded_url.response_recorder.payload_size() > self.min_text_size
diff --git a/warcprox/main.py b/warcprox/main.py
index 3723445..6fb46ef 100644
--- a/warcprox/main.py
+++ b/warcprox/main.py
@@ -154,6 +154,10 @@ def _build_arg_parser(prog='warcprox'):
     arg_parser.add_argument('--dedup-min-binary-size', dest='dedup_min_binary_size',
                             type=int, default=0, help=(
                             'try to dedup binary resources with payload size over this limit in bytes'))
+    # optionally, dedup request only when `dedup-bucket` is available in
+    # Warcprox-Meta HTTP header. By default, we dedup all requests.
+    arg_parser.add_argument('--dedup-only-with-bucket', dest='dedup_only_with_bucket',
+                            action='store_true', default=False, help=argparse.SUPPRESS)
     arg_parser.add_argument('--queue-size', dest='queue_size', type=int,
             default=500, help=argparse.SUPPRESS)
     arg_parser.add_argument('--max-threads', dest='max_threads', type=int,