diff --git a/spacy/__main__.py b/spacy/__main__.py
index e539ed78d..a5ba66fee 100644
--- a/spacy/__main__.py
+++ b/spacy/__main__.py
@@ -61,16 +61,17 @@ class CLI(object):
 
     @plac.annotations(
         input_dir=("directory with model data", "positional", None, str),
-        output_dir=("output directory", "positional", None, str)
+        output_dir=("output directory", "positional", None, str),
+        force=("force overwriting of existing output directory", "flag", "f", bool)
     )
-    def package(self, input_dir, output_dir):
+    def package(self, input_dir, output_dir, force=False):
         """
         Generate Python package for model data, including meta and required
         installation files. A new directory will be created in the specified
         output directory, and model data will be copied over.
         """
 
-        cli_package(input_dir, output_dir)
+        cli_package(input_dir, output_dir, force)
 
 
     def __missing__(self, name):
diff --git a/spacy/cli/package.py b/spacy/cli/package.py
index 9d1ff7183..abd3f6e4e 100644
--- a/spacy/cli/package.py
+++ b/spacy/cli/package.py
@@ -9,7 +9,7 @@ from .. import about
 from .. import util
 
 
-def package(input_dir, output_dir):
+def package(input_dir, output_dir, force):
     input_path = Path(input_dir)
     output_path = Path(output_dir)
     check_dirs(input_path, output_path)