diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f3b5e6f02..50d77d7cec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,10 @@ and this project adheres to
 - ♿(frontend) improve accessibility:
   - ♿(frontend) improve share modal button accessibility #1626
 
+### Changed
+
+- 🌐(backend) internationalize demo #1644
+
 ## [3.10.0] - 2025-11-18
 
 ### Added
diff --git a/src/backend/demo/management/commands/create_demo.py b/src/backend/demo/management/commands/create_demo.py
index 3681c378a0..a288a61974 100644
--- a/src/backend/demo/management/commands/create_demo.py
+++ b/src/backend/demo/management/commands/create_demo.py
@@ -17,7 +17,8 @@
 
 from demo import defaults
 
-fake = Faker()
+languages = [x for (x, y) in settings.LANGUAGES]
+fake = Faker(languages)
 
 logger = logging.getLogger("impress.commands.demo.create_demo")
 
@@ -127,7 +128,7 @@ def create_demo(stdout):
                     is_staff=False,
                     short_name=first_name,
                     full_name=f"{first_name:s} {random.choice(last_names):s}",
-                    language=random.choice(settings.LANGUAGES)[0],
+                    language=random.choice(languages),
                 )
             )
         queue.flush()
@@ -179,8 +180,7 @@ def create_demo(stdout):
                     is_superuser=False,
                     is_active=True,
                     is_staff=False,
-                    language=dev_user["language"]
-                    or random.choice(settings.LANGUAGES)[0],
+                    language=dev_user["language"] or random.choice(languages),
                 )
             )