diff --git a/src/Metrics/Metrics.php b/src/Metrics/Metrics.php
index 91c3567e6..246e35ccc 100644
--- a/src/Metrics/Metrics.php
+++ b/src/Metrics/Metrics.php
@@ -139,6 +139,9 @@ private function sendMetric(array $metric): ?EventId
                 }
             });
 
+            /**
+             * @psalm-suppress PossiblyInvalidArgument
+             */
             $metric['tags'] = array_merge($defaultTags, $metric['tags']);
         }
 
diff --git a/tests/Metrics/MetricsTest.php b/tests/Metrics/MetricsTest.php
index a9beeeace..94891de3b 100644
--- a/tests/Metrics/MetricsTest.php
+++ b/tests/Metrics/MetricsTest.php
@@ -28,9 +28,9 @@ public function testIncr(): void
             'type' => 'c',
             'value' => 10.0,
             'tags' => [
-                'foo' => 'bar',
                 'environment' => 'development',
                 'release' => '1.0.0',
+                'foo' => 'bar',
             ],
         ];
 
@@ -73,9 +73,9 @@ public function testDistribution(): void
                 30,
             ],
             'tags' => [
-                'foo' => 'bar',
                 'environment' => 'development',
                 'release' => '1.0.0',
+                'foo' => 'bar',
             ],
         ];
 
@@ -118,9 +118,9 @@ public function testSet(): void
                 30,
             ],
             'tags' => [
-                'foo' => 'bar',
                 'environment' => 'development',
                 'release' => '1.0.0',
+                'foo' => 'bar',
             ],
         ];
 
@@ -159,9 +159,9 @@ public function testGauge(): void
             'type' => 'g',
             'value' => 10.0,
             'tags' => [
-                'foo' => 'bar',
                 'environment' => 'development',
                 'release' => '1.0.0',
+                'foo' => 'bar',
             ],
         ];