diff --git a/aggregator_core/src/datastore.rs b/aggregator_core/src/datastore.rs
index 844921e1d..1aa6e8ba4 100644
--- a/aggregator_core/src/datastore.rs
+++ b/aggregator_core/src/datastore.rs
@@ -102,7 +102,7 @@ macro_rules! supported_schema_versions {
 // version is seen, [`Datastore::new`] fails.
 //
 // Note that the latest supported version must be first in the list.
-supported_schema_versions!(6, 5);
+supported_schema_versions!(7, 6);
 
 /// Datastore represents a datastore for Janus, with support for transactional reads and writes.
 /// In practice, Datastore instances are currently backed by a PostgreSQL database.
diff --git a/db/00000000000007_task_aggregation_counters.down.sql b/db/00000000000007_task_aggregation_counters.down.sql
new file mode 100644
index 000000000..fe38e502c
--- /dev/null
+++ b/db/00000000000007_task_aggregation_counters.down.sql
@@ -0,0 +1 @@
+DROP TABLE task_aggregation_counters;
diff --git a/db/00000000000007_task_aggregation_counters.up.sql b/db/00000000000007_task_aggregation_counters.up.sql
new file mode 100644
index 000000000..cb38bda2f
--- /dev/null
+++ b/db/00000000000007_task_aggregation_counters.up.sql
@@ -0,0 +1,14 @@
+-- Per-task report aggregation counters, used for metrics.
+--
+-- Fillfactor is lowered to improve the likelihood of heap-only tuple optimizations. See the
+-- discussion around this setting for the task_upload_counters table.
+CREATE TABLE task_aggregation_counters(
+    id       BIGINT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,  -- artificial ID, internal only
+    task_id  BIGINT NOT NULL,                                  -- task ID the counter is associated with
+    ord      BIGINT NOT NULL,                                  -- the ordinal index of the task aggregation counter
+
+    success  BIGINT NOT NULL DEFAULT 0,  -- reports successfully aggregated
+
+    CONSTRAINT task_aggregation_counters_unique_id UNIQUE(task_id, ord),
+    CONSTRAINT fk_task_id FOREIGN KEY(task_id) REFERENCES tasks(id) ON DELETE CASCADE
+) WITH (fillfactor = 50);