diff --git a/include/sdbusplus/server/transaction.hpp b/include/sdbusplus/server/transaction.hpp
index 50c9677..af56b33 100644
--- a/include/sdbusplus/server/transaction.hpp
+++ b/include/sdbusplus/server/transaction.hpp
@@ -25,7 +25,7 @@
     Transaction() : time(std::time(nullptr)), thread(std::this_thread::get_id())
     {}
 
-    int time;
+    std::time_t time;
     std::thread::id thread;
 };
 
diff --git a/src/server/transaction.cpp b/src/server/transaction.cpp
index bfd902a..671116d 100644
--- a/src/server/transaction.cpp
+++ b/src/server/transaction.cpp
@@ -88,7 +88,7 @@
 size_t hash<sdbusplus::server::transaction::details::Transaction>::operator()(
     const sdbusplus::server::transaction::details::Transaction& t) const
 {
-    auto hash1 = std::hash<int>{}(t.time);
+    auto hash1 = std::hash<std::time_t>{}(t.time);
     auto hash2 = std::hash<std::thread::id>{}(t.thread);
 
     // boost::hash_combine() algorithm.