diff --git a/x-pack/test/api_integration/deployment_agnostic/default_configs/serverless.config.base.ts b/x-pack/test/api_integration/deployment_agnostic/default_configs/serverless.config.base.ts
index 74332d0d9f802..3d817eb52252e 100644
--- a/x-pack/test/api_integration/deployment_agnostic/default_configs/serverless.config.base.ts
+++ b/x-pack/test/api_integration/deployment_agnostic/default_configs/serverless.config.base.ts
@@ -132,6 +132,9 @@ export function createServerlessTestConfig<T extends DeploymentAgnosticCommonSer
                 `--xpack.productDocBase.artifactRepositoryUrl=file:///${LOCAL_PRODUCT_DOC_PATH}`,
               ]
             : []),
+          ...(dockerRegistryPort
+            ? [`--xpack.fleet.registryUrl=http://localhost:${dockerRegistryPort}`]
+            : []),
         ],
       },
       testFiles: options.testFiles,
diff --git a/x-pack/test/api_integration/deployment_agnostic/default_configs/stateful.config.base.ts b/x-pack/test/api_integration/deployment_agnostic/default_configs/stateful.config.base.ts
index cd438f0cb4026..289e6734f7ce4 100644
--- a/x-pack/test/api_integration/deployment_agnostic/default_configs/stateful.config.base.ts
+++ b/x-pack/test/api_integration/deployment_agnostic/default_configs/stateful.config.base.ts
@@ -158,6 +158,9 @@ export function createStatefulTestConfig<T extends DeploymentAgnosticCommonServi
           '--xpack.uptime.service.manifestUrl=mockDevUrl',
           '--xpack.observabilityAIAssistant.disableKbSemanticTextMigration=true',
           `--xpack.productDocBase.artifactRepositoryUrl=file:///${LOCAL_PRODUCT_DOC_PATH}`,
+          ...(dockerRegistryPort
+            ? [`--xpack.fleet.registryUrl=http://localhost:${dockerRegistryPort}`]
+            : []),
         ],
       },
     };