diff --git a/src/cryptography/hazmat/bindings/openssl/x509.py b/src/cryptography/hazmat/bindings/openssl/x509.py
index 3125016..caa3396 100644
--- a/src/cryptography/hazmat/bindings/openssl/x509.py
+++ b/src/cryptography/hazmat/bindings/openssl/x509.py
@@ -146,9 +146,13 @@
 X509_EXTENSION *X509_EXTENSION_dup(X509_EXTENSION *);
 X509_EXTENSION *X509_get_ext(X509 *, int);
 int X509_get_ext_by_NID(X509 *, int, int);
+
 int X509_EXTENSION_get_critical(X509_EXTENSION *);
 ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *);
 void X509_EXTENSION_free(X509_EXTENSION *);
+X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **,
+                                             ASN1_OBJECT *, int,
+                                             ASN1_OCTET_STRING *);
 
 int i2d_X509(X509 *, unsigned char **);
 
@@ -156,11 +160,13 @@
 X509_REQ *X509_REQ_new(void);
 void X509_REQ_free(X509_REQ *);
 int X509_REQ_set_pubkey(X509_REQ *, EVP_PKEY *);
+int X509_REQ_set_subject_name(X509_REQ *, X509_NAME *);
 int X509_REQ_sign(X509_REQ *, EVP_PKEY *, const EVP_MD *);
 int X509_REQ_verify(X509_REQ *, EVP_PKEY *);
 int X509_REQ_digest(const X509_REQ *, const EVP_MD *,
                     unsigned char *, unsigned int *);
 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *);
+int X509_REQ_print(BIO *, X509_REQ *);
 int X509_REQ_print_ex(BIO *, X509_REQ *, unsigned long, unsigned long);
 
 int X509V3_EXT_print(BIO *, X509_EXTENSION *, unsigned long, int);
diff --git a/src/cryptography/hazmat/bindings/openssl/x509v3.py b/src/cryptography/hazmat/bindings/openssl/x509v3.py
index 2316799..054ab62 100644
--- a/src/cryptography/hazmat/bindings/openssl/x509v3.py
+++ b/src/cryptography/hazmat/bindings/openssl/x509v3.py
@@ -166,6 +166,8 @@
 MACROS = """
 /* This is a macro defined by a call to DECLARE_ASN1_FUNCTIONS in the
    x509v3.h header. */
+int i2d_BASIC_CONSTRAINTS(BASIC_CONSTRAINTS *, unsigned char **);
+BASIC_CONSTRAINTS *BASIC_CONSTRAINTS_new(void);
 void BASIC_CONSTRAINTS_free(BASIC_CONSTRAINTS *);
 /* This is a macro defined by a call to DECLARE_ASN1_FUNCTIONS in the
    x509v3.h header. */