diff --git a/openssl-sys/src/lib.rs b/openssl-sys/src/lib.rs
index 683642dcfd594725196bd530017db51fb26c637c..ec96c4fb675a5d015036b5651cb12247020c2aec 100644
--- a/openssl-sys/src/lib.rs
+++ b/openssl-sys/src/lib.rs
@@ -2412,6 +2412,7 @@ extern "C" {
     pub fn i2d_X509_REQ_bio(b: *mut BIO, x: *mut X509_REQ) -> c_int;
     pub fn i2d_X509_REQ(x: *mut X509_REQ, buf: *mut *mut u8) -> c_int;
 
+    pub fn d2i_AutoPrivateKey(a: *mut *mut EVP_PKEY, pp: *mut *const c_uchar, length: c_long) -> *mut EVP_PKEY;
     pub fn d2i_PUBKEY(k: *mut *mut EVP_PKEY, buf: *mut *const u8, len: c_long) -> *mut EVP_PKEY;
     pub fn i2d_PUBKEY_bio(b: *mut BIO, x: *mut EVP_PKEY) -> c_int;
     pub fn i2d_PrivateKey_bio(b: *mut BIO, x: *mut EVP_PKEY) -> c_int;
diff --git a/openssl/src/pkey.rs b/openssl/src/pkey.rs
index f8211b25e3427e5e7d425f81d01245299b21ca25..7bda47b56b38dbaa09df866c1661358228735a2e 100644
--- a/openssl/src/pkey.rs
+++ b/openssl/src/pkey.rs
@@ -141,6 +141,7 @@ impl PKey {
     private_key_from_pem!(PKey, ffi::PEM_read_bio_PrivateKey);
     public_key_from_pem!(PKey, ffi::PEM_read_bio_PUBKEY);
     public_key_from_der!(PKey, ffi::d2i_PUBKEY);
+    private_key_from_der!(PKey, ffi::d2i_AutoPrivateKey);
 
     /// Deserializes a DER-formatted PKCS#8 private key, using a callback to retrieve the password
     /// if the key is encrpyted.
@@ -317,6 +318,12 @@ mod tests {
         PKey::public_key_from_der(key).unwrap();
     }
 
+    #[test]
+    fn test_private_key_from_der() {
+        let key = include_bytes!("../test/key.der");
+        PKey::private_key_from_der(key).unwrap();
+    }
+
     #[test]
     fn test_pem() {
         let key = include_bytes!("../test/key.pem");
diff --git a/openssl/test/key.der b/openssl/test/key.der
new file mode 100644
index 0000000000000000000000000000000000000000..6b6209fd1fbe809a335cf29b263d9ffd5d1b9da0
Binary files /dev/null and b/openssl/test/key.der differ