diff --git a/deps/uv/AUTHORS b/deps/uv/AUTHORS
index 7e455f6736a..aa860db57bc 100644
--- a/deps/uv/AUTHORS
+++ b/deps/uv/AUTHORS
@@ -177,3 +177,4 @@ Logan Rosen <loganrosen@gmail.com>
 Kenneth Perry <thothonegan@gmail.com>
 John Marino <marino@FreeBSD.org>
 Alexey Melnichuk <mimir@newmail.ru>
+Johan Bergström <bugs@bergstroem.nu>
diff --git a/deps/uv/ChangeLog b/deps/uv/ChangeLog
index 0f3fce81ebe..a9d0829c917 100644
--- a/deps/uv/ChangeLog
+++ b/deps/uv/ChangeLog
@@ -1,4 +1,32 @@
-2015.01.06, Version 1.2.0 (Stable)
+2015.01.15, Version 1.2.1 (Stable), 4ca78e989062a1099dc4b9ad182a98e8374134b1
+
+Changes since version 1.2.0:
+
+* unix: remove unused dtrace file (Saúl Ibarra Corretgé)
+
+* test: skip TTY select test if /dev/tty can't be opened (Saúl Ibarra Corretgé)
+
+* doc: clarify the behavior of uv_tty_init (Saúl Ibarra Corretgé)
+
+* doc: clarify how uv_async_send behaves (Saúl Ibarra Corretgé)
+
+* build: make dist now generates a full tarball (Johan Bergström)
+
+* freebsd: make uv_exepath more resilient (Saúl Ibarra Corretgé)
+
+* unix: make setting the tty mode to the same value a no-op (Saúl Ibarra
+  Corretgé)
+
+* win,tcp: support uv_try_write (Bert Belder)
+
+* test: enable test-tcp-try-write on windows (Bert Belder)
+
+* win,tty: support uv_try_write (Bert Belder)
+
+* unix: set non-block mode in uv_{pipe,tcp,udp}_open (Ben Noordhuis)
+
+
+2015.01.06, Version 1.2.0 (Stable), 09f25b13cd149c7981108fc1a75611daf1277f83
 
 Changes since version 1.1.0:
 
diff --git a/deps/uv/Makefile.am b/deps/uv/Makefile.am
index c5b8a1fa870..e6af91d0726 100644
--- a/deps/uv/Makefile.am
+++ b/deps/uv/Makefile.am
@@ -108,7 +108,24 @@ libuv_la_SOURCES += src/unix/async.c \
 endif  # WINNT
 
 EXTRA_DIST = test/fixtures/empty_file \
-             test/fixtures/load_error.node
+             test/fixtures/load_error.node \
+             include \
+             test \
+             docs \
+             img \
+             samples \
+             android-configure \
+             CONTRIBUTING.md \
+             LICENSE \
+             README.md \
+             checksparse.sh \
+             vcbuild.bat \
+             Makefile.mingw \
+             common.gypi \
+             gyp_uv.py \
+             uv.gyp
+
+
 
 TESTS = test/run-tests
 check_PROGRAMS = test/run-tests
diff --git a/deps/uv/configure.ac b/deps/uv/configure.ac
index 56e97abf378..d765894e115 100644
--- a/deps/uv/configure.ac
+++ b/deps/uv/configure.ac
@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.2.0], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.2.1], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])
diff --git a/deps/uv/docs/src/async.rst b/deps/uv/docs/src/async.rst
index 7afc92a71bc..5c400458244 100644
--- a/deps/uv/docs/src/async.rst
+++ b/deps/uv/docs/src/async.rst
@@ -48,9 +48,10 @@ API
 
     .. warning::
         libuv will coalesce calls to :c:func:`uv_async_send`, that is, not every call to it will
-        yield an execution of the callback, the only guarantee is that it will be called at least
-        once. Thus, calling this function may not wakeup the event loop if it was already called
-        previously within a short period of time.
+        yield an execution of the callback. For example: if :c:func:`uv_async_send` is called 5
+        times in a row before the callback is called, the callback will only be called once. If
+        :c:func:`uv_async_send` is called again after the callback was called, it will be called
+        again.
 
 .. seealso::
     The :c:type:`uv_handle_t` API functions also apply.
diff --git a/deps/uv/docs/src/pipe.rst b/deps/uv/docs/src/pipe.rst
index 614bb2e3b1f..9fbb1f6c209 100644
--- a/deps/uv/docs/src/pipe.rst
+++ b/deps/uv/docs/src/pipe.rst
@@ -38,8 +38,7 @@ API
 
     Open an existing file descriptor or HANDLE as a pipe.
 
-    .. note::
-        The user is responsible for setting the file descriptor in non-blocking mode.
+    .. versionchanged:: 1.2.1 the file descriptor is set to non-blocking mode.
 
 .. c:function:: int uv_pipe_bind(uv_pipe_t* handle, const char* name)
 
diff --git a/deps/uv/docs/src/tcp.rst b/deps/uv/docs/src/tcp.rst
index 2c1001b531f..8baedde86c5 100644
--- a/deps/uv/docs/src/tcp.rst
+++ b/deps/uv/docs/src/tcp.rst
@@ -36,9 +36,7 @@ API
 
     Open an existing file descriptor or SOCKET as a TCP handle.
 
-    .. note::
-        The user is responsible for setting the file descriptor in
-        non-blocking mode.
+    .. versionchanged:: 1.2.1 the file descriptor is set to non-blocking mode.
 
 .. c:function:: int uv_tcp_nodelay(uv_tcp_t* handle, int enable)
 
diff --git a/deps/uv/docs/src/tty.rst b/deps/uv/docs/src/tty.rst
index 74b485941c0..6c20c84bf75 100644
--- a/deps/uv/docs/src/tty.rst
+++ b/deps/uv/docs/src/tty.rst
@@ -58,8 +58,13 @@ API
     `readable`, specifies if you plan on calling :c:func:`uv_read_start` with
     this stream. stdin is readable, stdout is not.
 
+    On Unix this function will try to open ``/dev/tty`` and use it if the passed file
+    descriptor refers to a TTY. This lets libuv put the tty in non-blocking mode
+    without affecting other processes that share the tty.
+
     .. note::
-        TTY streams which are not readable have blocking writes.
+        If opening ``/dev/tty`` fails, libuv falls back to blocking writes for non-readable
+        TTY streams.
 
 .. c:function:: int uv_tty_set_mode(uv_tty_t*, uv_tty_mode_t mode)
 
diff --git a/deps/uv/docs/src/udp.rst b/deps/uv/docs/src/udp.rst
index 175ce07a2db..9c4aa2102bd 100644
--- a/deps/uv/docs/src/udp.rst
+++ b/deps/uv/docs/src/udp.rst
@@ -120,6 +120,8 @@ API
     In other words, other datagram-type sockets like raw sockets or netlink
     sockets can also be passed to this function.
 
+    .. versionchanged:: 1.2.1 the file descriptor is set to non-blocking mode.
+
 .. c:function:: int uv_udp_bind(uv_udp_t* handle, const struct sockaddr* addr, unsigned int flags)
 
     Bind the UDP handle to an IP address and port.
diff --git a/deps/uv/include/uv-version.h b/deps/uv/include/uv-version.h
index 85d74723af1..398f0948c34 100644
--- a/deps/uv/include/uv-version.h
+++ b/deps/uv/include/uv-version.h
@@ -32,7 +32,7 @@
 
 #define UV_VERSION_MAJOR 1
 #define UV_VERSION_MINOR 2
-#define UV_VERSION_PATCH 0
+#define UV_VERSION_PATCH 1
 #define UV_VERSION_IS_RELEASE 1
 #define UV_VERSION_SUFFIX ""
 
diff --git a/deps/uv/src/unix/freebsd.c b/deps/uv/src/unix/freebsd.c
index 55492adc480..d87b74b9bca 100644
--- a/deps/uv/src/unix/freebsd.c
+++ b/deps/uv/src/unix/freebsd.c
@@ -75,8 +75,9 @@ uint64_t uv__hrtime(uv_clocktype_t type) {
 
 
 int uv_exepath(char* buffer, size_t* size) {
+  char abspath[PATH_MAX * 2 + 1];
   int mib[4];
-  size_t cb;
+  size_t abspath_size;
 
   if (buffer == NULL || size == NULL || *size == 0)
     return -EINVAL;
@@ -93,10 +94,19 @@ int uv_exepath(char* buffer, size_t* size) {
   mib[3] = -1;
 #endif
 
-  cb = *size;
-  if (sysctl(mib, 4, buffer, &cb, NULL, 0))
+  abspath_size = sizeof abspath;;
+  if (sysctl(mib, 4, abspath, &abspath_size, NULL, 0))
     return -errno;
-  *size = strlen(buffer);
+
+  assert(abspath_size > 0);
+  abspath_size -= 1;
+  *size -= 1;
+
+  if (*size > abspath_size)
+    *size = abspath_size;
+
+  memcpy(buffer, abspath, *size);
+  buffer[*size] = '\0';
 
   return 0;
 }
diff --git a/deps/uv/src/unix/pipe.c b/deps/uv/src/unix/pipe.c
index ef47700b7a1..ba833d3f547 100644
--- a/deps/uv/src/unix/pipe.c
+++ b/deps/uv/src/unix/pipe.c
@@ -125,9 +125,13 @@ void uv__pipe_close(uv_pipe_t* handle) {
 
 
 int uv_pipe_open(uv_pipe_t* handle, uv_file fd) {
-#if defined(__APPLE__)
   int err;
 
+  err = uv__nonblock(fd, 1);
+  if (err)
+    return err;
+
+#if defined(__APPLE__)
   err = uv__stream_try_select((uv_stream_t*) handle, &fd);
   if (err)
     return err;
diff --git a/deps/uv/src/unix/tcp.c b/deps/uv/src/unix/tcp.c
index 8c19c1ab956..4060e7bd709 100644
--- a/deps/uv/src/unix/tcp.c
+++ b/deps/uv/src/unix/tcp.c
@@ -156,6 +156,12 @@ int uv__tcp_connect(uv_connect_t* req,
 
 
 int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock) {
+  int err;
+
+  err = uv__nonblock(sock, 1);
+  if (err)
+    return err;
+
   return uv__stream_open((uv_stream_t*)handle,
                          sock,
                          UV_STREAM_READABLE | UV_STREAM_WRITABLE);
diff --git a/deps/uv/src/unix/tty.c b/deps/uv/src/unix/tty.c
index 068025eaf59..a1ea433f817 100644
--- a/deps/uv/src/unix/tty.c
+++ b/deps/uv/src/unix/tty.c
@@ -108,8 +108,10 @@ int uv_tty_set_mode(uv_tty_t* tty, uv_tty_mode_t mode) {
   struct termios tmp;
   int fd;
 
-  fd = uv__stream_fd(tty);
+  if (tty->mode == (int) mode)
+    return 0;
 
+  fd = uv__stream_fd(tty);
   if (tty->mode == UV_TTY_MODE_NORMAL && mode != UV_TTY_MODE_NORMAL) {
     if (tcgetattr(fd, &tty->orig_termios))
       return -errno;
diff --git a/deps/uv/src/unix/udp.c b/deps/uv/src/unix/udp.c
index 2e1824c358a..941c0aec6e2 100644
--- a/deps/uv/src/unix/udp.c
+++ b/deps/uv/src/unix/udp.c
@@ -565,6 +565,10 @@ int uv_udp_open(uv_udp_t* handle, uv_os_sock_t sock) {
   if (handle->io_watcher.fd != -1)
     return -EALREADY;  /* FIXME(bnoordhuis) Should be -EBUSY. */
 
+  err = uv__nonblock(sock, 1);
+  if (err)
+    return err;
+
   err = uv__set_reuse(sock);
   if (err)
     return err;
diff --git a/deps/uv/src/win/internal.h b/deps/uv/src/win/internal.h
index 89290aea327..04b2a548ca8 100644
--- a/deps/uv/src/win/internal.h
+++ b/deps/uv/src/win/internal.h
@@ -136,6 +136,8 @@ int uv_tcp_read_start(uv_tcp_t* handle, uv_alloc_cb alloc_cb,
     uv_read_cb read_cb);
 int uv_tcp_write(uv_loop_t* loop, uv_write_t* req, uv_tcp_t* handle,
     const uv_buf_t bufs[], unsigned int nbufs, uv_write_cb cb);
+int uv__tcp_try_write(uv_tcp_t* handle, const uv_buf_t bufs[],
+    unsigned int nbufs);
 
 void uv_process_tcp_read_req(uv_loop_t* loop, uv_tcp_t* handle, uv_req_t* req);
 void uv_process_tcp_write_req(uv_loop_t* loop, uv_tcp_t* handle,
@@ -211,6 +213,8 @@ int uv_tty_read_start(uv_tty_t* handle, uv_alloc_cb alloc_cb,
 int uv_tty_read_stop(uv_tty_t* handle);
 int uv_tty_write(uv_loop_t* loop, uv_write_t* req, uv_tty_t* handle,
     const uv_buf_t bufs[], unsigned int nbufs, uv_write_cb cb);
+int uv__tty_try_write(uv_tty_t* handle, const uv_buf_t bufs[],
+    unsigned int nbufs);
 void uv_tty_close(uv_tty_t* handle);
 
 void uv_process_tty_read_req(uv_loop_t* loop, uv_tty_t* handle,
diff --git a/deps/uv/src/win/stream.c b/deps/uv/src/win/stream.c
index 057f72ecad8..36d88d00bd9 100644
--- a/deps/uv/src/win/stream.c
+++ b/deps/uv/src/win/stream.c
@@ -184,8 +184,22 @@ int uv_write2(uv_write_t* req,
 int uv_try_write(uv_stream_t* stream,
                  const uv_buf_t bufs[],
                  unsigned int nbufs) {
-  /* NOTE: Won't work with overlapped writes */
-  return UV_ENOSYS;
+  if (stream->flags & UV__HANDLE_CLOSING)
+    return UV_EBADF;
+  if (!(stream->flags & UV_HANDLE_WRITABLE))
+    return UV_EPIPE;
+
+  switch (stream->type) {
+    case UV_TCP:
+      return uv__tcp_try_write((uv_tcp_t*) stream, bufs, nbufs);
+    case UV_TTY:
+      return uv__tty_try_write((uv_tty_t*) stream, bufs, nbufs);
+    case UV_NAMED_PIPE:
+      return UV_EAGAIN;
+    default:
+      assert(0);
+      return UV_ENOSYS;
+  }
 }
 
 
diff --git a/deps/uv/src/win/tcp.c b/deps/uv/src/win/tcp.c
index cff2929e4cc..c5ddbed08f7 100644
--- a/deps/uv/src/win/tcp.c
+++ b/deps/uv/src/win/tcp.c
@@ -876,6 +876,30 @@ int uv_tcp_write(uv_loop_t* loop,
 }
 
 
+int uv__tcp_try_write(uv_tcp_t* handle,
+                     const uv_buf_t bufs[],
+                     unsigned int nbufs) {
+  int result;
+  DWORD bytes;
+
+  if (handle->write_reqs_pending > 0)
+    return UV_EAGAIN;
+
+  result = WSASend(handle->socket,
+                   (WSABUF*) bufs,
+                   nbufs,
+                   &bytes,
+                   0,
+                   NULL,
+                   NULL);
+
+  if (result == SOCKET_ERROR)
+    return uv_translate_sys_error(WSAGetLastError());
+  else
+    return bytes;
+}
+
+
 void uv_process_tcp_read_req(uv_loop_t* loop, uv_tcp_t* handle,
     uv_req_t* req) {
   DWORD bytes, flags, err;
diff --git a/deps/uv/src/win/tty.c b/deps/uv/src/win/tty.c
index be4a8b81e40..603421045ca 100644
--- a/deps/uv/src/win/tty.c
+++ b/deps/uv/src/win/tty.c
@@ -1878,6 +1878,21 @@ int uv_tty_write(uv_loop_t* loop,
 }
 
 
+int uv__tty_try_write(uv_tty_t* handle,
+                      const uv_buf_t bufs[],
+                      unsigned int nbufs) {
+  DWORD error;
+
+  if (handle->write_reqs_pending > 0)
+    return UV_EAGAIN;
+
+  if (uv_tty_write_bufs(handle, bufs, nbufs, &error))
+    return uv_translate_sys_error(error);
+
+  return uv__count_bufs(bufs, nbufs);
+}
+
+
 void uv_process_tty_write_req(uv_loop_t* loop, uv_tty_t* handle,
   uv_write_t* req) {
   int err;
diff --git a/deps/uv/test/test-close-fd.c b/deps/uv/test/test-close-fd.c
index 0d17f076615..93a7bd7c021 100644
--- a/deps/uv/test/test-close-fd.c
+++ b/deps/uv/test/test-close-fd.c
@@ -54,7 +54,6 @@ TEST_IMPL(close_fd) {
   int fd[2];
 
   ASSERT(0 == pipe(fd));
-  ASSERT(0 == fcntl(fd[0], F_SETFL, O_NONBLOCK));
   ASSERT(0 == uv_pipe_init(uv_default_loop(), &pipe_handle, 0));
   ASSERT(0 == uv_pipe_open(&pipe_handle, fd[0]));
   fd[0] = -1;  /* uv_pipe_open() takes ownership of the file descriptor. */
diff --git a/deps/uv/test/test-osx-select.c b/deps/uv/test/test-osx-select.c
index ef551eaf2fc..6ccf6034834 100644
--- a/deps/uv/test/test-osx-select.c
+++ b/deps/uv/test/test-osx-select.c
@@ -54,8 +54,10 @@ TEST_IMPL(osx_select) {
   uv_tty_t tty;
 
   fd = open("/dev/tty", O_RDONLY);
-
-  ASSERT(fd >= 0);
+  if (fd < 0) {
+    LOGF("Cannot open /dev/tty as read-only: %s\n", strerror(errno));
+    return TEST_SKIP;
+  }
 
   r = uv_tty_init(uv_default_loop(), &tty, fd, 1);
   ASSERT(r == 0);
@@ -104,7 +106,10 @@ TEST_IMPL(osx_select_many_fds) {
   }
 
   fd = open("/dev/tty", O_RDONLY);
-  ASSERT(fd >= 0);
+  if (fd < 0) {
+    LOGF("Cannot open /dev/tty as read-only: %s\n", strerror(errno));
+    return TEST_SKIP;
+  }
 
   r = uv_tty_init(uv_default_loop(), &tty, fd, 1);
   ASSERT(r == 0);
diff --git a/deps/uv/test/test-spawn.c b/deps/uv/test/test-spawn.c
index 5c25f81926b..a229d225f1b 100644
--- a/deps/uv/test/test-spawn.c
+++ b/deps/uv/test/test-spawn.c
@@ -1243,7 +1243,6 @@ TEST_IMPL(closed_fd_events) {
 
   /* create a pipe and share it with a child process */
   ASSERT(0 == pipe(fd));
-  ASSERT(0 == fcntl(fd[0], F_SETFL, O_NONBLOCK));
 
   /* spawn_helper4 blocks indefinitely. */
   init_process_options("spawn_helper4", exit_cb);
diff --git a/deps/uv/test/test-tcp-try-write.c b/deps/uv/test/test-tcp-try-write.c
index baff6cf36cc..8a60136b64e 100644
--- a/deps/uv/test/test-tcp-try-write.c
+++ b/deps/uv/test/test-tcp-try-write.c
@@ -28,16 +28,6 @@
 
 #define MAX_BYTES 1024 * 1024
 
-#ifdef _WIN32
-
-TEST_IMPL(tcp_try_write) {
-
-  MAKE_VALGRIND_HAPPY();
-  return 0;
-}
-
-#else  /* !_WIN32 */
-
 static uv_tcp_t server;
 static uv_tcp_t client;
 static uv_tcp_t incoming;
@@ -138,5 +128,3 @@ TEST_IMPL(tcp_try_write) {
   MAKE_VALGRIND_HAPPY();
   return 0;
 }
-
-#endif  /* !_WIN32 */