diff --git a/adafruit_led_animation/animation/rainbow.py b/adafruit_led_animation/animation/rainbow.py
index 5c2b35b..2825fb0 100644
--- a/adafruit_led_animation/animation/rainbow.py
+++ b/adafruit_led_animation/animation/rainbow.py
@@ -123,3 +123,15 @@ def reset(self):
         Resets the animation.
         """
         self._generator = self._color_wheel_generator()
+
+    @property
+    def period(self) -> float:
+        """
+        Period to cycle the rainbow over in seconds.
+        """
+        return self._period
+
+    @period.setter
+    def period(self, new_value: float) -> None:
+        self._period = new_value
+        self.reset()