diff --git a/GITLAB_WORKHORSE_VERSION b/GITLAB_WORKHORSE_VERSION
index 19811903a7f..fcdb2e109f6 100644
--- a/GITLAB_WORKHORSE_VERSION
+++ b/GITLAB_WORKHORSE_VERSION
@@ -1 +1 @@
-3.8.0
+4.0.0
diff --git a/changelogs/unreleased/upgrade-workhorse-4-0-0.yml b/changelogs/unreleased/upgrade-workhorse-4-0-0.yml
new file mode 100644
index 00000000000..f9dbdc7fc56
--- /dev/null
+++ b/changelogs/unreleased/upgrade-workhorse-4-0-0.yml
@@ -0,0 +1,5 @@
+---
+title: Upgrade GitLab Workhorse to 4.0.0
+merge_request:
+author:
+type: added