diff --git a/etcd/SyncClient.hpp b/etcd/SyncClient.hpp
index 6b612b6..1bde9b9 100644
--- a/etcd/SyncClient.hpp
+++ b/etcd/SyncClient.hpp
@@ -24,16 +24,22 @@ namespace etcd
 
     Response get(std::string const & key);
     Response set(std::string const & key, std::string const & value, int ttl = 0);
+    Response set(std::string const & key, std::string const & value, int64_t leaseId);
     Response add(std::string const & key, std::string const & value, int ttl = 0);
+    Response add(std::string const & key, std::string const & value, int64_t leaseId);
     Response modify(std::string const & key, std::string const & value, int ttl = 0);
+    Response modify(std::string const & key, std::string const & value, int64_t leaseId);
     Response modify_if(std::string const & key, std::string const & value, std::string const & old_value, int ttl = 0);
+    Response modify_if(std::string const & key, std::string const & value, std::string const & old_value, int64_t leaseId);
     Response modify_if(std::string const & key, std::string const & value, int old_index, int ttl = 0);
+    Response modify_if(std::string const & key, std::string const & value, int old_index, int64_t leaseId);
     Response rm(std::string const & key);
     Response rm_if(std::string const & key, std::string const & old_value);
     Response rm_if(std::string const & key, int old_index);
     Response ls(std::string const & key);
     Response mkdir(std::string const & key, int ttl = 0);
     Response rmdir(std::string const & key, bool recursive = false);
+    Response leasegrant(int ttl);
 
     /**
      * Watches for changes of a key or a subtree. Please note that if you watch e.g. "/testdir" and
diff --git a/src/SyncClient.cpp b/src/SyncClient.cpp
index d968d32..e277339 100644
--- a/src/SyncClient.cpp
+++ b/src/SyncClient.cpp
@@ -25,26 +25,51 @@ etcd::Response etcd::SyncClient::set(std::string const & key, std::string const
   CHECK_EXCEPTIONS(client.set(key, value, ttl).get());
 }
 
+etcd::Response etcd::SyncClient::set(std::string const & key, std::string const & value, int64_t leaseId)
+{
+  CHECK_EXCEPTIONS(client.set(key, value, leaseId).get());
+}
+
 etcd::Response etcd::SyncClient::add(std::string const & key, std::string const & value, int ttl)
 {
   CHECK_EXCEPTIONS(client.add(key, value, ttl).get());
 }
 
+etcd::Response etcd::SyncClient::add(std::string const & key, std::string const & value, int64_t leaseId)
+{
+  CHECK_EXCEPTIONS(client.add(key, value, leaseId).get());
+}
+
 etcd::Response etcd::SyncClient::modify(std::string const & key, std::string const & value, int ttl)
 {
   CHECK_EXCEPTIONS(client.modify(key, value, ttl).get());
 }
 
+etcd::Response etcd::SyncClient::modify(std::string const & key, std::string const & value, int64_t leaseId)
+{
+  CHECK_EXCEPTIONS(client.modify(key, value, leaseId).get());
+}
+
 etcd::Response etcd::SyncClient::modify_if(std::string const & key, std::string const & value, std::string const & old_value, int ttl)
 {
   CHECK_EXCEPTIONS(client.modify_if(key, value, old_value, ttl).get());
 }
 
+etcd::Response etcd::SyncClient::modify_if(std::string const & key, std::string const & value, std::string const & old_value, int64_t leaseId)
+{
+  CHECK_EXCEPTIONS(client.modify_if(key, value, old_value, leaseId).get());
+}
+
 etcd::Response etcd::SyncClient::modify_if(std::string const & key, std::string const & value, int old_index, int ttl)
 {
   CHECK_EXCEPTIONS(client.modify_if(key, value, old_index, ttl).get());
 }
 
+etcd::Response etcd::SyncClient::modify_if(std::string const & key, std::string const & value, int old_index, int64_t leaseId)
+{
+  CHECK_EXCEPTIONS(client.modify_if(key, value, old_index, leaseId).get());
+}
+
 etcd::Response etcd::SyncClient::rm(std::string const & key)
 {
   CHECK_EXCEPTIONS(client.rm(key).get());
@@ -71,6 +96,11 @@ etcd::Response etcd::SyncClient::ls(std::string const & key)
   CHECK_EXCEPTIONS(client.ls(key).get());
 }
 
+etcd::Response etcd::SyncClient::leasegrant(int ttl)
+{
+  CHECK_EXCEPTIONS(client.leasegrant(ttl).get());
+}
+
 // etcd::Response etcd::SyncClient::watch(std::string const & key, bool recursive)
 // {
 //   web::http::uri_builder uri("/v2/keys" + key);
diff --git a/tst/EtcdSyncTest.cpp b/tst/EtcdSyncTest.cpp
index 7949b65..6a5352f 100644
--- a/tst/EtcdSyncTest.cpp
+++ b/tst/EtcdSyncTest.cpp
@@ -62,6 +62,46 @@ TEST_CASE("sync operations")
   CHECK(101 == etcd.rm_if("/test/key1", index - 1).error_code());
   CHECK(0   == etcd.rm_if("/test/key1", index).error_code());
 
+  //leasegrant
+  etcd::Response res = etcd.leasegrant(60);
+  REQUIRE(res.is_ok());
+  CHECK(60 == res.value().ttl());
+  CHECK(0 <  res.value().lease());
+  int64_t leaseid = res.value().lease();
+
+  //add with lease
+  res = etcd.add("/test/key1111", "43", leaseid);
+  REQUIRE(0  == res.error_code()); // overwrite
+  CHECK("create" == res.action());
+  CHECK(leaseid ==  res.value().lease());
+
+  //set with lease
+  res = etcd.set("/test/key1", "43", leaseid);
+  REQUIRE(0  == res.error_code());
+  CHECK("set" == res.action());
+  CHECK(leaseid ==  res.value().lease());
+
+  //modify with lease
+  res = etcd.modify("/test/key1", "44", leaseid);
+  REQUIRE(0  == res.error_code()); 
+  CHECK("update" == res.action());
+  CHECK(leaseid ==  res.value().lease());
+  CHECK("44" ==  res.value().as_string());
+
+  res = etcd.modify_if("/test/key1", "45", "44", leaseid);
+  index = res.index();
+  REQUIRE(res.is_ok());
+  CHECK("compareAndSwap" == res.action());
+  CHECK(leaseid ==  res.value().lease());
+  CHECK("45" == res.value().as_string());
+
+  res = etcd.modify_if("/test/key1", "44", index, leaseid);
+  index = res.index();
+  REQUIRE(res.is_ok());
+  CHECK("compareAndSwap" == res.action());
+  CHECK(leaseid ==  res.value().lease());
+  CHECK("44" == res.value().as_string());
+
 // TEST_CASE("wait for a value change")
 // {
 //   etcd::Client etcd(etcd_uri);
diff --git a/tst/EtcdTest.cpp b/tst/EtcdTest.cpp
index ab3bd2b..fb7c4fd 100644
--- a/tst/EtcdTest.cpp
+++ b/tst/EtcdTest.cpp
@@ -417,11 +417,6 @@ TEST_CASE("lease grant")
   REQUIRE(!res.is_ok());
   REQUIRE(5  == res.error_code()); 
   CHECK("etcdserver: requested lease not found" == res.error_message());
-
-
-
-
-
 }
 
 TEST_CASE("cleanup")