diff --git a/src/DatesFunctions.php b/src/DatesFunctions.php
index 457c246..b656675 100644
--- a/src/DatesFunctions.php
+++ b/src/DatesFunctions.php
@@ -206,7 +206,10 @@ protected function getLabelsData(): array
         $result = [];
 
         $labelColumn = explode('.', $this->labelColumn)[1];
-        $missingDataLabels = DB::table($this->table)->get()->pluck($labelColumn)->toArray();
+
+        $missingDataLabels = empty($this->missingDataLabels)
+            ? DB::table($this->table)->get()->pluck($labelColumn)->toArray()
+            : $this->missingDataLabels;
 
         foreach ($missingDataLabels as $label) {
             $result[$label] = $this->missingDataValue;
diff --git a/src/LaravelMetrics.php b/src/LaravelMetrics.php
index 3439b6c..47d213c 100644
--- a/src/LaravelMetrics.php
+++ b/src/LaravelMetrics.php
@@ -51,6 +51,8 @@ class LaravelMetrics
 
     protected bool $fillMissingData = false;
 
+    protected array $missingDataLabels = [];
+
     protected int $missingDataValue = 0;
 
     protected string $groupBy;
@@ -441,10 +443,11 @@ public function labelColumn(string $column): self
         return $this;
     }
 
-    public function fillMissingData(int $missingDataValue = 0): self
+    public function fillMissingData(int $missingDataValue = 0, array $missingDataLabels = []): self
     {
         $this->fillMissingData = true;
         $this->missingDataValue = $missingDataValue;
+        $this->missingDataLabels = $missingDataLabels;
 
         return $this;
     }
@@ -592,7 +595,7 @@ protected function asData(): string
         return "$this->aggregate($this->column) as data";
     }
 
-    protected function asLabel(string $label = null, bool $format = true): string
+    protected function asLabel(?string $label = null, bool $format = true): string
     {
         if (is_null($this->labelColumn)) {
             $label = ! $format ? $label : $this->formatPeriod($label);