diff --git a/extras/win32-portable/create_portable.txt b/extras/win32-portable/create_portable.txt
index 9a87492df..690fdf716 100644
--- a/extras/win32-portable/create_portable.txt
+++ b/extras/win32-portable/create_portable.txt
@@ -7,7 +7,7 @@ How to create a new portable Windows distribution of OpenSlides:
 
 2. Install all required python packages (see requirements_production.txt):
 
-       easy_install -Z django backports.ssl_match_hostname beautifulsoup4 bleach django-haystack django-mptt jsonfield natsort reportlab setuptools sockjs_tornado tornado whoosh
+       easy_install -Z django backports.ssl_match_hostname beautifulsoup4 bleach django-haystack django-mptt jsonfield natsort reportlab roman setuptools sockjs_tornado tornado whoosh
 
 
 3. Install pywin32 from binary installer:
diff --git a/extras/win32-portable/prepare_portable.py b/extras/win32-portable/prepare_portable.py
index 7f3be92d1..4675f76a1 100755
--- a/extras/win32-portable/prepare_portable.py
+++ b/extras/win32-portable/prepare_portable.py
@@ -90,6 +90,9 @@ SITE_PACKAGES = {
             "sgmlop.pyd",
         ],
     },
+    "roman": {
+        "copy": ["roman.py"],
+    },
     "setuptools": {
         "copy": [
             "setuptools",