diff --git a/Lib/http/cookiejar.py b/Lib/http/cookiejar.py
--- a/Lib/http/cookiejar.py
+++ b/Lib/http/cookiejar.py
@@ -164,16 +164,19 @@ def _str2time(day, mon, yr, hr, min, sec
     if sec is None: sec = 0
 
     yr = int(yr)
     day = int(day)
     hr = int(hr)
     min = int(min)
     sec = int(sec)
 
+    if yr > datetime.MAXYEAR:
+        return None
+
     if yr < 1000:
         # find "obvious" year
         cur_yr = time.localtime(time.time())[0]
         m = cur_yr % 100
         tmp = yr
         yr = yr + cur_yr - m
         m = m - tmp
         if abs(m) > 50:
diff --git a/Lib/test/test_http_cookiejar.py b/Lib/test/test_http_cookiejar.py
--- a/Lib/test/test_http_cookiejar.py
+++ b/Lib/test/test_http_cookiejar.py
@@ -76,32 +76,31 @@ class DateTimeTests(unittest.TestCase):
             t = http2time(s)
             t2 = http2time(s.lower())
             t3 = http2time(s.upper())
 
             self.assertTrue(t == t2 == t3 == test_t,
                          "'%s'  =>  %s, %s, %s (%s)" % (s, t, t2, t3, test_t))
 
     def test_http2time_garbage(self):
-        for test in [
-            '',
-            'Garbage',
-            'Mandag 16. September 1996',
-            '01-00-1980',
-            '01-13-1980',
-            '00-01-1980',
-            '32-01-1980',
-            '01-01-1980 25:00:00',
-            '01-01-1980 00:61:00',
-            '01-01-1980 00:00:62',
-            ]:
-            self.assertTrue(http2time(test) is None,
-                         "http2time(%s) is not None\n"
-                         "http2time(test) %s" % (test, http2time(test))
-                         )
+        tests = ('',
+                 'Garbage',
+                 'Mandag 16. September 1996',
+                 '01-00-1980',
+                 '01-13-1980',
+                 '00-01-1980',
+                 '32-01-1980',
+                 '01-01-1980 25:00:00',
+                 '01-01-1980 00:61:00',
+                 '01-01-1980 00:00:62',
+                 '08-Oct-3697739',)
+        for test in tests:
+            result = http2time(test)
+            msg = "http2time(%s) is not None\nhttp2time(test) %s"
+            self.assertIsNone(result, msg % (test, result))
 
 
 class HeaderTests(unittest.TestCase):
 
     def test_parse_ns_headers(self):
         # quotes should be stripped
         expected = [[('foo', 'bar'), ('expires', 2209069412), ('version', '0')]]
         for hdr in [