diff --git a/src/OverteClient.cpp b/src/OverteClient.cpp
index 4f41b96..f256ec1 100644
--- a/src/OverteClient.cpp
+++ b/src/OverteClient.cpp
@@ -121,6 +121,10 @@ static std::string generateUUID() {
     return ss.str();
 }
 
+OverteClient::~OverteClient() {
+    // Destructor implementation (required for unique_ptr with forward-declared type)
+}
+
 bool OverteClient::login(const std::string& username, const std::string& password, const std::string& metaverseUrl) {
     if (!m_auth) {
         m_auth = std::make_unique<OverteAuth>();
diff --git a/src/OverteClient.hpp b/src/OverteClient.hpp
index dcf1220..59def3a 100644
--- a/src/OverteClient.hpp
+++ b/src/OverteClient.hpp
@@ -66,6 +66,7 @@ class OverteClient {
 public:
 	explicit OverteClient(std::string domainUrl)
 		: m_domainUrl(std::move(domainUrl)) {}
+	~OverteClient();  // Required for unique_ptr with forward-declared type
 
 	// Authentication
 	bool login(const std::string& username, const std::string& password,