diff --git a/NTPClient.cpp b/NTPClient.cpp
index def941e..011c89c 100644
--- a/NTPClient.cpp
+++ b/NTPClient.cpp
@@ -25,7 +25,7 @@ NTPClient::NTPClient(UDP& udp) {
   this->_udp            = &udp;
 }
 
-NTPClient::NTPClient(UDP& udp, int timeOffset) {
+NTPClient::NTPClient(UDP& udp, long timeOffset) {
   this->_udp            = &udp;
   this->_timeOffset     = timeOffset;
 }
@@ -35,13 +35,13 @@ NTPClient::NTPClient(UDP& udp, const char* poolServerName) {
   this->_poolServerName = poolServerName;
 }
 
-NTPClient::NTPClient(UDP& udp, const char* poolServerName, int timeOffset) {
+NTPClient::NTPClient(UDP& udp, const char* poolServerName, long timeOffset) {
   this->_udp            = &udp;
   this->_timeOffset     = timeOffset;
   this->_poolServerName = poolServerName;
 }
 
-NTPClient::NTPClient(UDP& udp, const char* poolServerName, int timeOffset, unsigned long updateInterval) {
+NTPClient::NTPClient(UDP& udp, const char* poolServerName, long timeOffset, unsigned long updateInterval) {
   this->_udp            = &udp;
   this->_timeOffset     = timeOffset;
   this->_poolServerName = poolServerName;
diff --git a/NTPClient.h b/NTPClient.h
index cdbf55a..b9c6123 100644
--- a/NTPClient.h
+++ b/NTPClient.h
@@ -15,7 +15,7 @@ class NTPClient {
 
     const char*   _poolServerName = "pool.ntp.org"; // Default time server
     int           _port           = NTP_DEFAULT_LOCAL_PORT;
-    int           _timeOffset     = 0;
+    long          _timeOffset     = 0;
 
     unsigned long _updateInterval = 60000;  // In ms
 
@@ -28,10 +28,10 @@ class NTPClient {
 
   public:
     NTPClient(UDP& udp);
-    NTPClient(UDP& udp, int timeOffset);
+    NTPClient(UDP& udp, long timeOffset);
     NTPClient(UDP& udp, const char* poolServerName);
-    NTPClient(UDP& udp, const char* poolServerName, int timeOffset);
-    NTPClient(UDP& udp, const char* poolServerName, int timeOffset, unsigned long updateInterval);
+    NTPClient(UDP& udp, const char* poolServerName, long timeOffset);
+    NTPClient(UDP& udp, const char* poolServerName, long timeOffset, unsigned long updateInterval);
 
     /**
      * Starts the underlying UDP client with the default local port