diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index d3e72c0..68e1f73 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -2332,6 +2332,12 @@
 
         Corresponds to the dotted string ``"2.5.4.65"``.
 
+    .. attribute:: USER_ID
+
+        .. versionadded:: 1.6
+
+        Corresponds to the dotted string ``"0.9.2342.19200300.100.1.1"``.
+
     .. attribute:: DOMAIN_COMPONENT
 
         Corresponds to the dotted string ``"0.9.2342.19200300.100.1.25"``. A string
@@ -2357,6 +2363,18 @@
 
         Corresponds to the dotted string ``"2.5.4.15"``.
 
+    .. attribute:: POSTAL_ADDRESS
+
+        .. versionadded:: 1.6
+
+        Corresponds to the dotted string ``"2.5.4.16"``.
+
+    .. attribute:: POSTAL_CODE
+
+        .. versionadded:: 1.6
+
+        Corresponds to the dotted string ``"2.5.4.17"``.
+
 
 .. class:: SignatureAlgorithmOID
 
diff --git a/src/cryptography/x509/oid.py b/src/cryptography/x509/oid.py
index 6890ead..3edac72 100644
--- a/src/cryptography/x509/oid.py
+++ b/src/cryptography/x509/oid.py
@@ -110,6 +110,7 @@
     X500_UNIQUE_IDENTIFIER = ObjectIdentifier("2.5.4.45")
     DN_QUALIFIER = ObjectIdentifier("2.5.4.46")
     PSEUDONYM = ObjectIdentifier("2.5.4.65")
+    USER_ID = ObjectIdentifier("0.9.2342.19200300.100.1.1")
     DOMAIN_COMPONENT = ObjectIdentifier("0.9.2342.19200300.100.1.25")
     EMAIL_ADDRESS = ObjectIdentifier("1.2.840.113549.1.9.1")
     JURISDICTION_COUNTRY_NAME = ObjectIdentifier("1.3.6.1.4.1.311.60.2.1.3")
@@ -118,6 +119,8 @@
         "1.3.6.1.4.1.311.60.2.1.2"
     )
     BUSINESS_CATEGORY = ObjectIdentifier("2.5.4.15")
+    POSTAL_ADDRESS = ObjectIdentifier("2.5.4.16")
+    POSTAL_CODE = ObjectIdentifier("2.5.4.17")
 
 
 class SignatureAlgorithmOID(object):
@@ -194,6 +197,7 @@
     NameOID.X500_UNIQUE_IDENTIFIER: "x500UniqueIdentifier",
     NameOID.DN_QUALIFIER: "dnQualifier",
     NameOID.PSEUDONYM: "pseudonym",
+    NameOID.USER_ID: "userID",
     NameOID.DOMAIN_COMPONENT: "domainComponent",
     NameOID.EMAIL_ADDRESS: "emailAddress",
     NameOID.JURISDICTION_COUNTRY_NAME: "jurisdictionCountryName",
@@ -202,6 +206,8 @@
         "jurisdictionStateOrProvinceName"
     ),
     NameOID.BUSINESS_CATEGORY: "businessCategory",
+    NameOID.POSTAL_ADDRESS: "postalAddress",
+    NameOID.POSTAL_CODE: "postalCode",
 
     SignatureAlgorithmOID.RSA_WITH_MD5: "md5WithRSAEncryption",
     SignatureAlgorithmOID.RSA_WITH_SHA1: "sha1WithRSAEncryption",