diff --git a/tests/test_datetime.cpp b/tests/test_datetime.cpp
index e9cb35f..e315b51 100644
--- a/tests/test_datetime.cpp
+++ b/tests/test_datetime.cpp
@@ -6,6 +6,7 @@
 #include <boost/test/included/unit_test.hpp>
 #endif
 #include <toml.hpp>
+#include <thread>
 
 BOOST_AUTO_TEST_CASE(test_datetime_convertible)
 {
@@ -14,10 +15,16 @@ BOOST_AUTO_TEST_CASE(test_datetime_convertible)
     const std::chrono::system_clock::time_point cvt(d1);
     toml::Datetime d2(cvt);
 
+    BOOST_CHECK_EQUAL(d1, d2);
+
     const auto time = std::chrono::system_clock::to_time_t(now);
     toml::Datetime d3(time);
     toml::Datetime d4(std::chrono::system_clock::from_time_t(time));
 
-    BOOST_CHECK_EQUAL(d1, d2);
     BOOST_CHECK_EQUAL(d3, d4);
+
+    std::this_thread::sleep_for(std::chrono::seconds(2));
+    const auto later = std::chrono::system_clock::now();
+    toml::Datetime d5(later);
+    BOOST_CHECK(d1 < d5);
 }