diff --git a/tokio/src/fs/file.rs b/tokio/src/fs/file.rs
index af7be5863c9..c45582729ac 100644
--- a/tokio/src/fs/file.rs
+++ b/tokio/src/fs/file.rs
@@ -600,3 +600,17 @@ impl fmt::Debug for File {
             .finish()
     }
 }
+
+#[cfg(unix)]
+impl std::os::unix::io::AsRawFd for File {
+    fn as_raw_fd(&self) -> std::os::unix::io::RawFd {
+        self.std.as_raw_fd()
+    }
+}
+
+#[cfg(windows)]
+impl std::os::windows::io::AsRawHandle for File {
+    fn as_raw_handle(&self) -> std::os::windows::io::RawHandle {
+        self.std.as_raw_handle()
+    }
+}
diff --git a/tokio/tests/support/mock_file.rs b/tokio/tests/support/mock_file.rs
index 7f3beee8415..44aa7b3f715 100644
--- a/tokio/tests/support/mock_file.rs
+++ b/tokio/tests/support/mock_file.rs
@@ -263,3 +263,17 @@ impl fmt::Debug for File {
         fmt.debug_struct("mock::File").finish()
     }
 }
+
+#[cfg(unix)]
+impl std::os::unix::io::AsRawFd for File {
+    fn as_raw_fd(&self) -> std::os::unix::io::RawFd {
+        unimplemented!();
+    }
+}
+
+#[cfg(windows)]
+impl std::os::windows::io::AsRawHandle for File {
+    fn as_raw_handle(&self) -> std::os::windows::io::RawHandle {
+        unimplemented!();
+    }
+}