diff --git a/src/_cffi_src/build_openssl.py b/src/_cffi_src/build_openssl.py
index 491d174..ba6e17b 100644
--- a/src/_cffi_src/build_openssl.py
+++ b/src/_cffi_src/build_openssl.py
@@ -83,6 +83,7 @@
         "hmac",
         "nid",
         "objects",
+        "ocsp",
         "opensslv",
         "pem",
         "pkcs12",
diff --git a/src/_cffi_src/openssl/ocsp.py b/src/_cffi_src/openssl/ocsp.py
new file mode 100644
index 0000000..5865dba
--- /dev/null
+++ b/src/_cffi_src/openssl/ocsp.py
@@ -0,0 +1,67 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+INCLUDES = """
+#include <openssl/ocsp.h>
+"""
+
+TYPES = """
+typedef ... OCSP_REQUEST;
+typedef ... OCSP_ONEREQ;
+typedef ... OCSP_RESPONSE;
+typedef ... OCSP_BASICRESP;
+typedef ... OCSP_SINGLERESP;
+typedef ... OCSP_CERTID;
+"""
+
+FUNCTIONS = """
+int OCSP_response_status(OCSP_RESPONSE *);
+OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *);
+int OCSP_BASICRESP_get_ext_count(OCSP_BASICRESP *);
+X509_EXTENSION *OCSP_BASICRESP_get_ext(OCSP_BASICRESP *, int);
+int OCSP_resp_count(OCSP_BASICRESP *);
+OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *, int);
+int OCSP_SINGLERESP_get_ext_count(OCSP_SINGLERESP *);
+X509_EXTENSION *OCSP_SINGLERESP_get_ext(OCSP_SINGLERESP *, int);
+
+int OCSP_single_get0_status(OCSP_SINGLERESP *, int *, ASN1_GENERALIZEDTIME **,
+                            ASN1_GENERALIZEDTIME **, ASN1_GENERALIZEDTIME **);
+
+int OCSP_request_onereq_count(OCSP_REQUEST *);
+OCSP_ONEREQ *OCSP_request_onereq_get0(OCSP_REQUEST *, int);
+int OCSP_ONEREQ_get_ext_count(OCSP_ONEREQ *);
+X509_EXTENSION *OCSP_ONEREQ_get_ext(OCSP_ONEREQ *, int);
+OCSP_CERTID *OCSP_onereq_get0_id(OCSP_ONEREQ *);
+
+
+OCSP_BASICRESP *OCSP_BASICRESP_new(void);
+void OCSP_BASICRESP_free(OCSP_BASICRESP *);
+OCSP_SINGLERESP *OCSP_basic_add1_status(OCSP_BASICRESP *, OCSP_CERTID *, int,
+                                        int, ASN1_TIME *, ASN1_TIME *,
+                                        ASN1_TIME *);
+int OCSP_basic_add1_nonce(OCSP_BASICRESP *, unsigned char *, int);
+int OCSP_basic_add1_cert(OCSP_BASICRESP *, X509 *);
+int OCSP_BASICRESP_add1_ext_i2d(OCSP_BASICRESP *, int, void *, int,
+                                unsigned long);
+int OCSP_basic_sign(OCSP_BASICRESP *, X509 *, EVP_PKEY *, const EVP_MD *,
+                    Cryptography_STACK_OF_X509 *, unsigned long);
+OCSP_RESPONSE *OCSP_response_create(int, OCSP_BASICRESP *);
+
+OCSP_REQUEST *OCSP_REQUEST_new(void);
+void OCSP_REQUEST_free(OCSP_REQUEST *);
+int OCSP_request_add1_nonce(OCSP_REQUEST *, unsigned char *, int);
+int OCSP_REQUEST_add1_ext_i2d(OCSP_REQUEST *, int, void *, int, unsigned long);
+"""
+
+MACROS = """
+OCSP_REQUEST *d2i_OCSP_REQUEST_bio(BIO *, OCSP_REQUEST **);
+OCSP_RESPONSE *d2i_OCSP_RESPONSE_bio(BIO *, OCSP_RESPONSE **);
+int i2d_OCSP_REQUEST_bio(BIO *, OCSP_REQUEST *);
+int i2d_OCSP_RESPONSE_bio(BIO *, OCSP_RESPONSE *);
+"""
+
+CUSTOMIZATIONS = """
+"""