diff --git a/scripts/move_mrs_to_monorepo.py b/scripts/move_mrs_to_monorepo.py
index 32b1a69e6b..cdd343feae 100755
--- a/scripts/move_mrs_to_monorepo.py
+++ b/scripts/move_mrs_to_monorepo.py
@@ -9,7 +9,7 @@ try:
     import gitlab
 except ModuleNotFoundError:
     print("========================================================================", file=sys.stderr)
-    print("ERROR: Install python-gitlab with `python3 -m pip install python-gitlab dateutil`", file=sys.stderr)
+    print("ERROR: Install python-gitlab with `python3 -m pip install python-gitlab python-dateutil`", file=sys.stderr)
     print("========================================================================", file=sys.stderr)
     sys.exit(1)