diff --git a/src/backend/commands/extension.c b/src/backend/commands/extension.c
index 7b3aceee11..3db859c3ea 100644
--- a/src/backend/commands/extension.c
+++ b/src/backend/commands/extension.c
@@ -887,6 +887,11 @@ execute_extension_script(Oid extensionOid, ExtensionControlFile *control,
 
 	filename = get_extension_script_filename(control, from_version, version);
 
+	if (from_version == NULL)
+		elog(DEBUG1, "executing extension script for \"%s\" version '%s'", control->name, version);
+	else
+		elog(DEBUG1, "executing extension script for \"%s\" update from version '%s' to '%s'", control->name, from_version, version);
+
 	/*
 	 * If installing a trusted extension on behalf of a non-superuser, become
 	 * the bootstrap superuser.  (This switch will be cleaned up automatically