diff --git a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/main-api-server.mustache b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/main-api-server.mustache
index 6ee93b4dd416..3a433fc3667e 100644
--- a/modules/openapi-generator/src/main/resources/cpp-oatpp-server/main-api-server.mustache
+++ b/modules/openapi-generator/src/main/resources/cpp-oatpp-server/main-api-server.mustache
@@ -22,7 +22,7 @@ public:
    *  Create ConnectionProvider component which listens on the port
    */
   OATPP_CREATE_COMPONENT(std::shared_ptr<oatpp::network::ServerConnectionProvider>, serverConnectionProvider)([] {
-    return oatpp::network::tcp::server::ConnectionProvider::createShared({"localhost", {{serverPort}}{{^serverPort}}8080{{/serverPort}}, oatpp::network::Address::IP_4});
+    return oatpp::network::tcp::server::ConnectionProvider::createShared({"0.0.0.0", {{serverPort}}{{^serverPort}}8080{{/serverPort}}, oatpp::network::Address::IP_4});
   }());
 
   /**
diff --git a/samples/server/petstore/cpp-oatpp/main-api-server.cpp b/samples/server/petstore/cpp-oatpp/main-api-server.cpp
index 7a87ccb7f61e..03b489df102d 100644
--- a/samples/server/petstore/cpp-oatpp/main-api-server.cpp
+++ b/samples/server/petstore/cpp-oatpp/main-api-server.cpp
@@ -34,7 +34,7 @@ class AppComponent {
    *  Create ConnectionProvider component which listens on the port
    */
   OATPP_CREATE_COMPONENT(std::shared_ptr<oatpp::network::ServerConnectionProvider>, serverConnectionProvider)([] {
-    return oatpp::network::tcp::server::ConnectionProvider::createShared({"localhost", 8080, oatpp::network::Address::IP_4});
+    return oatpp::network::tcp::server::ConnectionProvider::createShared({"0.0.0.0", 8080, oatpp::network::Address::IP_4});
   }());
 
   /**