diff --git a/pyproject.toml b/pyproject.toml
index d45b8f7..a7f7073 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ readme = "README.md"
 requires-python = ">=3.9"
 license = {file = "LICENSE"}
 dependencies = [
-    "internetarchive==4.1.0",
+    "internetarchive",
     "docopt==0.6.2",
     "yt-dlp",
 ]
diff --git a/tubeup/__main__.py b/tubeup/__main__.py
index 0841765..07db11e 100644
--- a/tubeup/__main__.py
+++ b/tubeup/__main__.py
@@ -56,9 +56,7 @@
 import logging
 import traceback
 
-import internetarchive
-import internetarchive.cli
-
+from tubeup.utils import key_value_to_dict
 from tubeup.TubeUp import TubeUp
 from tubeup import __version__
 
@@ -90,7 +88,7 @@ def main():
         ch.setFormatter(formatter)
         root.addHandler(ch)
 
-    metadata = internetarchive.cli.argparser.get_args_dict(args['--metadata'])
+    metadata = key_value_to_dict(args['--metadata'])
 
     tu = TubeUp(verbose=not quiet_mode,
                 output_template=args['--output'])
diff --git a/tubeup/utils.py b/tubeup/utils.py
index bc12845..52d31a4 100644
--- a/tubeup/utils.py
+++ b/tubeup/utils.py
@@ -1,10 +1,29 @@
 import os
 import re
+from collections import defaultdict
 
 
 EMPTY_ANNOTATION_FILE = ('<?xml version="1.0" encoding="UTF-8" ?>'
                          '<document><annotations></annotations></document>')
 
+def key_value_to_dict(lst):
+    """
+    Convert many key:value pair strings into a python dictionary
+    """
+    if not isinstance(lst, list):
+        lst = [lst]
+
+    result = defaultdict(list)
+    for item in lst:
+        key, value = item.split(":", 1)
+        assert value, f"Expected a value! for {key}"
+        if result[key] and value not in result[key]:
+            result[key].append(value)
+        else:
+            result[key] = [value]
+
+    # Convert single-item lists back to strings for non-list values
+    return {k: v if len(v) > 1 else v[0] for k, v in result.items()}
 
 def sanitize_identifier(identifier, replacement='-'):
     return re.sub(r'[^\w-]', replacement, identifier)