diff --git a/service/src/main/kotlin/app/cash/backfila/api/ConfigureServiceAction.kt b/service/src/main/kotlin/app/cash/backfila/api/ConfigureServiceAction.kt
index fe835bc3b..09ab8ae8b 100644
--- a/service/src/main/kotlin/app/cash/backfila/api/ConfigureServiceAction.kt
+++ b/service/src/main/kotlin/app/cash/backfila/api/ConfigureServiceAction.kt
@@ -68,6 +68,7 @@ class ConfigureServiceAction @Inject constructor(
           request.connector_extra_data,
           request.slack_channel,
           variant,
+          clock.instant(),
         )
         session.save(dbService)
       } else {
@@ -75,6 +76,7 @@ class ConfigureServiceAction @Inject constructor(
         dbService.connector_extra_data = request.connector_extra_data
         dbService.slack_channel = request.slack_channel
         dbService.variant = variant
+        dbService.last_registered_at = clock.instant()
       }
 
       // Add any missing backfills, update modified ones, and mark missing ones as deleted.
diff --git a/service/src/main/kotlin/app/cash/backfila/service/persistence/DbService.kt b/service/src/main/kotlin/app/cash/backfila/service/persistence/DbService.kt
index de2efbe69..13e50e61c 100644
--- a/service/src/main/kotlin/app/cash/backfila/service/persistence/DbService.kt
+++ b/service/src/main/kotlin/app/cash/backfila/service/persistence/DbService.kt
@@ -37,17 +37,22 @@ class DbService() : DbUnsharded<DbService>, DbTimestampedEntity {
   @Column
   override lateinit var updated_at: Instant
 
+  @Column(nullable = true)
+  var last_registered_at: Instant? = null
+
   constructor(
     registry_name: String,
     connector: String,
     connector_extra_data: String?,
     slack_channel: String?,
     variant: String,
+    last_registered_at: Instant?,
   ) : this() {
     this.registry_name = registry_name
     this.connector = connector
     this.connector_extra_data = connector_extra_data
     this.slack_channel = slack_channel
     this.variant = variant
+    this.last_registered_at = last_registered_at
   }
 }
diff --git a/service/src/main/resources/migrations/v020__backfila.sql b/service/src/main/resources/migrations/v020__backfila.sql
new file mode 100644
index 000000000..b1741ae10
--- /dev/null
+++ b/service/src/main/resources/migrations/v020__backfila.sql
@@ -0,0 +1,2 @@
+ALTER TABLE services
+ADD COLUMN last_registered_at TIMESTAMP(3) DEFAULT CURRENT_TIMESTAMP(3);
\ No newline at end of file