diff --git a/packages/shared/lib/sdk/sync.ts b/packages/shared/lib/sdk/sync.ts
index b90ce1e275a..73470d8d68b 100644
--- a/packages/shared/lib/sdk/sync.ts
+++ b/packages/shared/lib/sdk/sync.ts
@@ -372,6 +372,7 @@ export class NangoAction {
             providerConfigKey: config.providerConfigKey,
             connectionId: config.connectionId,
             headers: {
+                ...(config.headers || {}),
                 'user-agent': this.nango.userAgent
             }
         };
diff --git a/packages/utils/lib/environment/detection.ts b/packages/utils/lib/environment/detection.ts
index 6f068b25a27..28ef1705ff2 100644
--- a/packages/utils/lib/environment/detection.ts
+++ b/packages/utils/lib/environment/detection.ts
@@ -8,7 +8,7 @@ export const isStaging = process.env['NODE_ENV'] === NodeEnv.Staging;
 export const isProd = process.env['NODE_ENV'] === NodeEnv.Prod;
 export const isCloud = process.env['NANGO_CLOUD']?.toLowerCase() === 'true';
 export const isEnterprise = process.env['NANGO_ENTERPRISE']?.toLowerCase() === 'true';
-export const isLocal = !isCloud && !isEnterprise && !isDocker && process.env['NODE_ENV'] === NodeEnv.Dev;
+export const isLocal = !isCloud && !isEnterprise && !isDocker && (process.env['NODE_ENV'] === NodeEnv.Dev || !process.env['NODE_ENV']);
 export const isTest = Boolean(process.env['CI'] !== undefined || process.env['VITEST']);
 export const isBasicAuthEnabled = !isCloud && process.env['NANGO_DASHBOARD_USERNAME'] && process.env['NANGO_DASHBOARD_PASSWORD'];
 export const isHosted = !isCloud && !isLocal && !isEnterprise;