diff --git a/openssl-sys/src/lib.rs b/openssl-sys/src/lib.rs
index 78b683f4..73918d7d 100644
--- a/openssl-sys/src/lib.rs
+++ b/openssl-sys/src/lib.rs
@@ -1200,6 +1200,7 @@ pub const RSA_SSLV23_PADDING: c_int = 2;
 pub const RSA_NO_PADDING: c_int = 3;
 pub const RSA_PKCS1_OAEP_PADDING: c_int = 4;
 pub const RSA_X931_PADDING: c_int = 5;
+pub const RSA_PKCS1_PSS_PADDING: c_int = 6;
 
 pub const SHA_LBLOCK: c_int = 16;
 
diff --git a/openssl/src/rsa.rs b/openssl/src/rsa.rs
index 02240948..6a591b69 100644
--- a/openssl/src/rsa.rs
+++ b/openssl/src/rsa.rs
@@ -63,6 +63,7 @@ impl Padding {
     pub const NONE: Padding = Padding(ffi::RSA_NO_PADDING);
     pub const PKCS1: Padding = Padding(ffi::RSA_PKCS1_PADDING);
     pub const PKCS1_OAEP: Padding = Padding(ffi::RSA_PKCS1_OAEP_PADDING);
+    pub const PKCS1_PSS: Padding = Padding(ffi::RSA_PKCS1_PSS_PADDING);
 }
 
 generic_foreign_type_and_impl_send_sync! {