diff --git a/env.d/development/common.dist b/env.d/development/common.dist
index ec20b2d5..9e8e8253 100644
--- a/env.d/development/common.dist
+++ b/env.d/development/common.dist
@@ -45,3 +45,6 @@ OIDC_AUTH_REQUEST_EXTRA_PARAMS={"acr_values": "eidas1"}
 AI_BASE_URL=https://openaiendpoint.com
 AI_API_KEY=password
 AI_MODEL=llama
+
+# Collaboration
+COLLABORATION_SERVER_URL=ws://localhost:4444
diff --git a/src/backend/core/api/viewsets.py b/src/backend/core/api/viewsets.py
index 203c1942..394dbc7d 100644
--- a/src/backend/core/api/viewsets.py
+++ b/src/backend/core/api/viewsets.py
@@ -902,6 +902,7 @@ class ConfigView(views.APIView):
         """
         array_settings = [
             "ENVIRONMENT",
+            "COLLABORATION_SERVER_URL",
             "MEDIA_BASE_URL",
             "LANGUAGES",
             "LANGUAGE_CODE",
diff --git a/src/backend/core/tests/test_api_config.py b/src/backend/core/tests/test_api_config.py
index 405ff27a..3c1daab6 100644
--- a/src/backend/core/tests/test_api_config.py
+++ b/src/backend/core/tests/test_api_config.py
@@ -18,6 +18,7 @@ pytestmark = pytest.mark.django_db
 @override_settings(
     SENTRY_DSN="https://sentry.test/123",
     MEDIA_BASE_URL="http://testserver/",
+    COLLABORATION_SERVER_URL="http://testcollab/",
 )
 def test_api_config_anonymous():
     """Anonymous users should be allowed to get the configuration."""
@@ -25,6 +26,7 @@ def test_api_config_anonymous():
     response = client.get("/api/v1.0/config/")
     assert response.status_code == HTTP_200_OK
     assert response.json() == {
+        "COLLABORATION_SERVER_URL": "http://testcollab/",
         "LANGUAGES": [["en-us", "English"], ["fr-fr", "French"], ["de-de", "German"]],
         "LANGUAGE_CODE": "en-us",
         "SENTRY_DSN": "https://sentry.test/123",
@@ -34,7 +36,9 @@ def test_api_config_anonymous():
 
 
 @override_settings(
-    SENTRY_DSN="https://sentry.test/123", MEDIA_BASE_URL="http://testserver/"
+    SENTRY_DSN="https://sentry.test/123",
+    MEDIA_BASE_URL="http://testserver/",
+    COLLABORATION_SERVER_URL="http://testcollab/",
 )
 def test_api_config_authenticated():
     """Authenticated users should be allowed to get the configuration."""
@@ -46,6 +50,7 @@ def test_api_config_authenticated():
     response = client.get("/api/v1.0/config/")
     assert response.status_code == HTTP_200_OK
     assert response.json() == {
+        "COLLABORATION_SERVER_URL": "http://testcollab/",
         "LANGUAGES": [["en-us", "English"], ["fr-fr", "French"], ["de-de", "German"]],
         "LANGUAGE_CODE": "en-us",
         "SENTRY_DSN": "https://sentry.test/123",
diff --git a/src/backend/impress/settings.py b/src/backend/impress/settings.py
index ec62e86d..25bf9c4a 100755
--- a/src/backend/impress/settings.py
+++ b/src/backend/impress/settings.py
@@ -377,6 +377,11 @@ class Base(Configuration):
     # Sentry
     SENTRY_DSN = values.Value(None, environ_name="SENTRY_DSN", environ_prefix=None)
 
+    # Collaboration
+    COLLABORATION_SERVER_URL = values.Value(
+        None, environ_name="COLLABORATION_SERVER_URL", environ_prefix=None
+    )
+
     # Easy thumbnails
     THUMBNAIL_EXTENSION = "webp"
     THUMBNAIL_TRANSPARENCY_EXTENSION = "webp"