diff --git a/x-pack/filebeat/module/shorewall/log/ingest/pipeline.json b/x-pack/filebeat/module/shorewall/log/ingest/pipeline.json
index 58eade0bd6f..a3fdd4c058c 100644
--- a/x-pack/filebeat/module/shorewall/log/ingest/pipeline.json
+++ b/x-pack/filebeat/module/shorewall/log/ingest/pipeline.json
@@ -15,6 +15,7 @@
                 "field": "timestamp",
                 "target_field": "@timestamp",
                 "formats": ["MMM dd HH:mm:ss"],
+                "timezone": "UTC",
                 "ignore_failure": false
             }
         },