diff --git a/Changes b/Changes
index 1736e9f..5b3781e 100644
--- a/Changes
+++ b/Changes
@@ -4,6 +4,7 @@ Change history for HTTP-Date
 
     - Add test with Time::Zone (GH#25) (Michal Josef Špaček)
     - Add test with bad Time::Zone string (Michal Josef Špaček)
+    - Add tests with negative time (Michal Josef Špaček)
 
 6.06      2023-07-06 22:29:55Z
     - Use copyright year rather than range (GH#18) (Olaf Alders)
diff --git a/t/date.t b/t/date.t
index 1f33dcf..03181c5 100644
--- a/t/date.t
+++ b/t/date.t
@@ -3,7 +3,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 146;
+use Test::More tests => 152;
 use HTTP::Date;
 
 # test str2time for supported dates.  Test cases with 2 digit year
@@ -118,6 +118,11 @@ for (
     '1980-01-01 00:61:00',
     '1980-01-01 00:00:61',
 
+    # Negative time
+    '1880-01-01',
+    'Thu, 01 Jan 1880 00:00:00 GMT',
+    '01/Jan/1880:00:00:00 0000',
+
     # Bad timezone string
     '01 Jan 1994 02:00:00 BAD',
 ) {