diff --git a/src/mpv.rs b/src/mpv.rs
index 6fd2736..38cbab0 100644
--- a/src/mpv.rs
+++ b/src/mpv.rs
@@ -7,6 +7,8 @@ pub enum Message {
     Pause,
     Forward,
     Backward,
+    SpeedUp,
+    SlowDown,
 }
 
 pub fn play(siv: &mut Cursive) {
@@ -25,6 +27,14 @@ pub fn forward(siv: &mut Cursive) {
     send_message(siv, Message::Forward);
 }
 
+pub fn speed_up(siv: &mut Cursive) {
+    send_message(siv, Message::SpeedUp)
+}
+
+pub fn slow_down(siv: &mut Cursive) {
+    send_message(siv, Message::SlowDown)
+}
+
 pub fn backward(siv: &mut Cursive) {
     send_message(siv, Message::Backward);
 }
@@ -100,6 +110,18 @@ pub fn simple_example(
                     Ok(Message::Backward) => mpv
                         .command(&["seek", "-5"])
                         .expect("Error setting MPV property"),
+                        Ok(Message::SpeedUp) => {
+                            let speed: f64 = mpv.get_property("speed").unwrap();
+                            let new_speed: f64 = (speed + 0.25).min(5.0);
+                            mpv.set_option("speed", new_speed)
+                                .expect("Error setting MPV property");
+                        },
+                        Ok(Message::SlowDown) => {
+                            let speed: f64 = mpv.get_property("speed").unwrap();
+                            let new_speed: f64 = (speed - 0.25).min(0.5);
+                            mpv.set_option("speed", new_speed)
+                                .expect("Error setting MPV property");
+                        },
                     _ => break 'main,
                 };
             }
diff --git a/src/tui.rs b/src/tui.rs
index 8949af1..cc82e99 100644
--- a/src/tui.rs
+++ b/src/tui.rs
@@ -31,6 +31,8 @@ fn show_player(siv: &mut Cursive, book_mpv: &(u64, i64, u64)) {
                 .child(Button::new("Pause", mpv::pause))
                 .child(Button::new("Backward", mpv::backward))
                 .child(Button::new("Forward", mpv::forward))
+                .child(Button::new("Speed+", mpv::speed_up))
+                .child(Button::new("Speed-", mpv::slow_down))
                 .child(Button::new("Exit", show_bookshelf)),
         )
         .title("Player"),