diff --git a/Lib/http/cookiejar.py b/Lib/http/cookiejar.py
index afd5f20..e9efab8 100644
--- a/Lib/http/cookiejar.py
+++ b/Lib/http/cookiejar.py
@@ -121,7 +121,7 @@
 
 UTC_ZONES = {"GMT": None, "UTC": None, "UT": None, "Z": None}
 
-TIMEZONE_RE = re.compile(r"^([-+])?(\d\d?):?(\d\d)?$")
+TIMEZONE_RE = re.compile(r"^([-+])?(\d\d?):?(\d\d)?$", re.ASCII)
 def offset_from_tz_string(tz):
     offset = None
     if tz in UTC_ZONES:
@@ -191,9 +191,9 @@
 
 STRICT_DATE_RE = re.compile(
     r"^[SMTWF][a-z][a-z], (\d\d) ([JFMASOND][a-z][a-z]) "
-    "(\d\d\d\d) (\d\d):(\d\d):(\d\d) GMT$")
+    "(\d\d\d\d) (\d\d):(\d\d):(\d\d) GMT$", re.ASCII)
 WEEKDAY_RE = re.compile(
-    r"^(?:Sun|Mon|Tue|Wed|Thu|Fri|Sat)[a-z]*,?\s*", re.I)
+    r"^(?:Sun|Mon|Tue|Wed|Thu|Fri|Sat)[a-z]*,?\s*", re.I | re.ASCII)
 LOOSE_HTTP_DATE_RE = re.compile(
     r"""^
     (\d\d?)            # day
@@ -210,7 +210,7 @@
     ([-+]?\d{2,4}|(?![APap][Mm]\b)[A-Za-z]+)? # timezone
        \s*
     (?:\(\w+\))?       # ASCII representation of timezone in parens.
-       \s*$""", re.X)
+       \s*$""", re.X | re.ASCII)
 def http2time(text):
     """Returns time in seconds since epoch of time represented by a string.
 
@@ -282,7 +282,7 @@
       \s*
    ([-+]?\d\d?:?(:?\d\d)?
     |Z|z)?               # timezone  (Z is "zero meridian", i.e. GMT)
-      \s*$""", re.X)
+      \s*$""", re.X | re. ASCII)
 def iso2time(text):
     """
     As for http2time, but parses the ISO 8601 formats:
@@ -489,7 +489,7 @@
     return result
 
 
-IPV4_RE = re.compile(r"\.\d+$")
+IPV4_RE = re.compile(r"\.\d+$", re.ASCII)
 def is_HDN(text):
     """Return True if text is a host domain name."""
     # XXX
@@ -574,7 +574,7 @@
         return True
     return False
 
-cut_port_re = re.compile(r":\d+$")
+cut_port_re = re.compile(r":\d+$", re.ASCII)
 def request_host(request):
     """Return request-host, as defined by RFC 2965.
 
@@ -1207,7 +1207,7 @@
     domain_re = re.compile(r"[^.]*")
     dots_re = re.compile(r"^\.+")
 
-    magic_re = r"^\#LWP-Cookies-(\d+\.\d+)"
+    magic_re = re.compile(r"^\#LWP-Cookies-(\d+\.\d+)", re.ASCII)
 
     def __init__(self, policy=None):
         if policy is None:
@@ -1856,7 +1856,7 @@
 
     def _really_load(self, f, filename, ignore_discard, ignore_expires):
         magic = f.readline()
-        if not re.search(self.magic_re, magic):
+        if not self.magic_re.search(magic):
             msg = ("%r does not look like a Set-Cookie3 (LWP) format "
                    "file" % filename)
             raise LoadError(msg)
@@ -1965,7 +1965,7 @@
     header by default (Mozilla can cope with that).
 
     """
-    magic_re = "#( Netscape)? HTTP Cookie File"
+    magic_re = re.compile("#( Netscape)? HTTP Cookie File")
     header = """\
     # Netscape HTTP Cookie File
     # http://www.netscape.com/newsref/std/cookie_spec.html
@@ -1977,7 +1977,7 @@
         now = time.time()
 
         magic = f.readline()
-        if not re.search(self.magic_re, magic):
+        if not self.magic_re.search(magic):
             f.close()
             raise LoadError(
                 "%r does not look like a Netscape format cookies file" %
diff --git a/Lib/http/cookies.py b/Lib/http/cookies.py
index 344bede..3242d83 100644
--- a/Lib/http/cookies.py
+++ b/Lib/http/cookies.py
@@ -445,7 +445,7 @@
     ""+ _LegalCharsPatt +"*"        # Any word or empty string
     r")"                          # End of group 'val'
     r"\s*;?"                      # Probably ending in a semi-colon
-    )
+    , re.ASCII)                   # May be removed if safe.
 
 
 # At long last, here is the cookie class.