diff --git a/docs/contributing/phabricator.rst b/docs/contributing/phabricator.rst
index 7bd3f8637d9c33e10998c0deb8dbdb3a46a2d369..856c43fa77437bf38e14404c6f8fa6ec56b99761 100644
--- a/docs/contributing/phabricator.rst
+++ b/docs/contributing/phabricator.rst
@@ -5,6 +5,14 @@
 
    Contributors
 
+Important
+=========
+
+We have moved our development from Phabricator to a GitLab instance at
+https://gitlab.softwareheritage.org/
+
+The content below is no longer relevant and will be updated soon.
+
 .. _patch-submission:
 
 Submitting patches