diff --git a/test_suite/tests/test_de.rs b/test_suite/tests/test_de.rs
index d1bddfaf..b915fba7 100644
--- a/test_suite/tests/test_de.rs
+++ b/test_suite/tests/test_de.rs
@@ -14,7 +14,7 @@ extern crate serde_derive;
 use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
 use std::net;
 use std::path::{Path, PathBuf};
-use std::time::Duration;
+use std::time::{Duration, UNIX_EPOCH};
 use std::default::Default;
 use std::ffi::{CString, OsString};
 
@@ -682,6 +682,23 @@ declare_tests! {
             Token::SeqEnd,
         ],
     }
+    test_system_time {
+        UNIX_EPOCH + Duration::new(1, 2) => &[
+            Token::Struct { name: "SystemTime", len: 2 },
+                Token::Str("secs_since_epoch"),
+                Token::U64(1),
+
+                Token::Str("nanos_since_epoch"),
+                Token::U32(2),
+            Token::StructEnd,
+        ],
+        UNIX_EPOCH + Duration::new(1, 2) => &[
+            Token::Seq { len: Some(2) },
+                Token::I64(1),
+                Token::I64(2),
+            Token::SeqEnd,
+        ],
+    }
     test_range {
         1u32..2u32 => &[
             Token::Struct { name: "Range", len: 2 },
diff --git a/test_suite/tests/test_ser.rs b/test_suite/tests/test_ser.rs
index ae10b26b..35ed33c5 100644
--- a/test_suite/tests/test_ser.rs
+++ b/test_suite/tests/test_ser.rs
@@ -12,7 +12,7 @@ extern crate serde_derive;
 use std::collections::{BTreeMap, HashMap, HashSet};
 use std::net;
 use std::path::{Path, PathBuf};
-use std::time::Duration;
+use std::time::{Duration, UNIX_EPOCH};
 use std::ffi::CString;
 
 #[cfg(unix)]
@@ -319,6 +319,17 @@ declare_tests! {
             Token::StructEnd,
         ],
     }
+    test_system_time {
+        UNIX_EPOCH + Duration::new(1, 2) => &[
+            Token::Struct { name: "SystemTime", len: 2 },
+                Token::Str("secs_since_epoch"),
+                Token::U64(1),
+
+                Token::Str("nanos_since_epoch"),
+                Token::U32(2),
+            Token::StructEnd,
+        ],
+    }
     test_range {
         1u32..2u32 => &[
             Token::Struct { name: "Range", len: 2 },