diff --git a/src/libstd/sys/unix/ext.rs b/src/libstd/sys/unix/ext.rs
index 9504fe6369788..66aaf26b09b72 100644
--- a/src/libstd/sys/unix/ext.rs
+++ b/src/libstd/sys/unix/ext.rs
@@ -249,6 +249,7 @@ pub mod fs {
     /// # Ok(())
     /// # }
     /// ```
+    #[stable(feature = "rust1", since = "1.0.0")]
     pub fn symlink<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q) -> io::Result<()>
     {
         sys::fs2::symlink(src.as_ref(), dst.as_ref())
diff --git a/src/libstd/sys/windows/ext.rs b/src/libstd/sys/windows/ext.rs
index eac6496870eab..dd747d202a04b 100644
--- a/src/libstd/sys/windows/ext.rs
+++ b/src/libstd/sys/windows/ext.rs
@@ -256,6 +256,7 @@ pub mod fs {
     /// # Ok(())
     /// # }
     /// ```
+    #[stable(feature = "rust1", since = "1.0.0")]
     pub fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
                                                         -> io::Result<()>
     {
@@ -278,6 +279,7 @@ pub mod fs {
     /// # Ok(())
     /// # }
     /// ```
+    #[stable(feature = "rust1", since = "1.0.0")]
     pub fn symlink_dir<P: AsRef<Path>, Q: AsRef<Path>> (src: P, dst: Q)
                                                         -> io::Result<()>
     {