diff --git a/.travis.yml b/.travis.yml
index 66926322..432f9506 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,11 +2,16 @@ language: rust
 env:
   global:
     - secure: qLvBJoJOJcPPZ+e31175O6sMUGBHgHe/kBuI0FCPeifYmpFyeRAkEvGddEkf8t3rojV+wE14CNYzzGsT/W/+JY7xW0C1FQKW3r+8SZ1Cave/8ahee0aCQVXGf0XY8c52uG6MrLGiUlNZbOsyFSdFUc/Io+kYZas4DxrinRSOIEA=
+os:
+  - osx
+  - linux
 before_script:
   - openssl s_server -accept 15418 -www -cert test/cert.pem -key test/key.pem >/dev/null &
 script:
   - cargo build
   - cargo test
   - rustdoc src/lib.rs
+  - cargo build --features "sslv2"
+  - cargo build --features "tlsv1_1 tlsv1_2"
 after_script:
   - curl http://www.rust-ci.org/artifacts/put?t=$RUSTCI_TOKEN | sh
diff --git a/Cargo.toml b/Cargo.toml
index 4e7246ff..4c61dd7e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,3 +8,8 @@ authors = ["Steven Fackler <sfackler@gmail.com"]
 
 name = "openssl"
 path = "src/lib.rs"
+
+[features]
+tlsv1_2 = []
+tlsv1_1 = []
+sslv2 = []
diff --git a/src/ssl/ffi.rs b/src/ssl/ffi.rs
index 2e21a24b..a40af35e 100755
--- a/src/ssl/ffi.rs
+++ b/src/ssl/ffi.rs
@@ -103,8 +103,18 @@ pub static X509_FILETYPE_PEM: c_int = 1;
 pub static X509_FILETYPE_ASN1: c_int = 2;
 pub static X509_FILETYPE_DEFAULT: c_int = 3;
 
+#[cfg(target_os = "macos", feature = "tlsv1_1")]
+#[cfg(target_os = "macos", feature = "tlsv1_2")]
+#[link(name="ssl.1.0.0")]
+#[link(name="crypto.1.0.0")]
+extern {}
+
+#[cfg(not(target_os = "macos"))]
+#[cfg(target_os = "macos", not(feature = "tlsv1_1"), not(feature = "tlsv1_2"))]
 #[link(name="ssl")]
 #[link(name="crypto")]
+extern {}
+
 extern "C" {
     pub fn CRYPTO_num_locks() -> c_int;
     pub fn CRYPTO_set_locking_callback(func: extern "C" fn(mode: c_int,
@@ -116,10 +126,14 @@ extern "C" {
 
     pub fn SSL_library_init() -> c_int;
 
-    #[cfg(sslv2)]
+    #[cfg(feature = "sslv2")]
     pub fn SSLv2_method() -> *const SSL_METHOD;
     pub fn SSLv3_method() -> *const SSL_METHOD;
     pub fn TLSv1_method() -> *const SSL_METHOD;
+    #[cfg(feature = "tlsv1_1")]
+    pub fn TLSv1_1_method() -> *const SSL_METHOD;
+    #[cfg(feature = "tlsv1_2")]
+    pub fn TLSv1_2_method() -> *const SSL_METHOD;
     pub fn SSLv23_method() -> *const SSL_METHOD;
 
     pub fn SSL_CTX_new(method: *const SSL_METHOD) -> *mut SSL_CTX;
diff --git a/src/ssl/mod.rs b/src/ssl/mod.rs
index 785b8dfc..fc775a32 100644
--- a/src/ssl/mod.rs
+++ b/src/ssl/mod.rs
@@ -48,8 +48,9 @@ fn init() {
 
 /// Determines the SSL method supported
 #[deriving(Show, Hash, PartialEq, Eq)]
+#[allow(non_camel_case_types)]
 pub enum SslMethod {
-    #[cfg(sslv2)]
+    #[cfg(feature = "sslv2")]
     /// Only support the SSLv2 protocol
     Sslv2,
     /// Only support the SSLv3 protocol
@@ -58,16 +59,24 @@ pub enum SslMethod {
     Tlsv1,
     /// Support the SSLv2, SSLv3 and TLSv1 protocols
     Sslv23,
+    #[cfg(feature = "tlsv1_1")]
+    Tlsv1_1,
+    #[cfg(feature = "tlsv1_2")]
+    Tlsv1_2,
 }
 
 impl SslMethod {
     unsafe fn to_raw(&self) -> *const ffi::SSL_METHOD {
         match *self {
-            #[cfg(sslv2)]
+            #[cfg(feature = "sslv2")]
             Sslv2 => ffi::SSLv2_method(),
             Sslv3 => ffi::SSLv3_method(),
             Tlsv1 => ffi::TLSv1_method(),
-            Sslv23 => ffi::SSLv23_method()
+            Sslv23 => ffi::SSLv23_method(),
+            #[cfg(feature = "tlsv1_1")]
+            Tlsv1_1 => ffi::TLSv1_1_method(),
+            #[cfg(feature = "tlsv1_2")]
+            Tlsv1_2 => ffi::TLSv1_2_method()
         }
     }
 }