diff --git a/internal/manager/persistence/jobs.go b/internal/manager/persistence/jobs.go
index 80b7d240..4f02d256 100644
--- a/internal/manager/persistence/jobs.go
+++ b/internal/manager/persistence/jobs.go
@@ -46,7 +46,7 @@ type Task struct {
 	// Which worker is/was working on this.
 	WorkerID      *uint
 	Worker        *Worker   `gorm:"foreignkey:WorkerID;references:ID;constraint:OnDelete:CASCADE"`
-	LastTouchedAt time.Time // Should contain UTC timestamps.
+	LastTouchedAt time.Time `gorm:"index"` // Should contain UTC timestamps.
 
 	// Dependencies are tasks that need to be completed before this one can run.
 	Dependencies []*Task `gorm:"many2many:task_dependencies;constraint:OnDelete:CASCADE"`