diff --git a/tests/Unit/Utils/HostResolverTest.php b/tests/Unit/Utils/HostResolverTest.php
index f428b94..a92ed90 100644
--- a/tests/Unit/Utils/HostResolverTest.php
+++ b/tests/Unit/Utils/HostResolverTest.php
@@ -159,6 +159,11 @@ protected function isInContainer(): bool
             {
                 return true;
             }
+
+            protected function findDefaultGateway(): ?string
+            {
+                return null;
+            }
         };
 
         putenv('DOCKER_HOST=unix://docker:2375');
@@ -184,6 +189,11 @@ protected function isInContainer(): bool
             {
                 return true;
             }
+
+            protected function findDefaultGateway(): ?string
+            {
+                return null;
+            }
         };
 
         putenv('DOCKER_HOST=unix://podman.sock');