diff --git a/wagtail/utils/deprecation.py b/wagtail/utils/deprecation.py
index 7183ca023..9c8de9505 100644
--- a/wagtail/utils/deprecation.py
+++ b/wagtail/utils/deprecation.py
@@ -7,3 +7,7 @@ removed_in_next_version_warning = RemovedInWagtail14Warning
 
 class RemovedInWagtail15Warning(PendingDeprecationWarning):
     pass
+
+
+class RemovedInWagtail16Warning(PendingDeprecationWarning):
+    pass