diff --git a/warehouse/metrics_mesh/models/first_of_event_from_artifact.sql b/warehouse/metrics_mesh/models/first_of_event_from_artifact.sql
index 2b2d2992..4184c7aa 100644
--- a/warehouse/metrics_mesh/models/first_of_event_from_artifact.sql
+++ b/warehouse/metrics_mesh/models/first_of_event_from_artifact.sql
@@ -1,7 +1,7 @@
 MODEL (
   name metrics.first_of_event_from_artifact,
   kind FULL,
-  partitioned_by (day("time"), "event_type", "event_source"),
+  partitioned_by (year("time"), "event_type", "event_source"),
   grain (
     time,
     event_type,
diff --git a/warehouse/metrics_mesh/models/last_of_event_from_artifact.sql b/warehouse/metrics_mesh/models/last_of_event_from_artifact.sql
index 0b923df8..73712981 100644
--- a/warehouse/metrics_mesh/models/last_of_event_from_artifact.sql
+++ b/warehouse/metrics_mesh/models/last_of_event_from_artifact.sql
@@ -1,7 +1,7 @@
 MODEL (
   name metrics.last_of_event_from_artifact,
   kind FULL,
-  partitioned_by (day("time"), "event_type", "event_source"),
+  partitioned_by (year("time"), "event_type", "event_source"),
   grain (
     time,
     event_type,