diff --git a/adafruit_rgb_display/st7735.py b/adafruit_rgb_display/st7735.py
index daa5020..0191a15 100644
--- a/adafruit_rgb_display/st7735.py
+++ b/adafruit_rgb_display/st7735.py
@@ -193,7 +193,7 @@ def __init__(
         spi: busio.SPI,
         dc: digitalio.DigitalInOut,
         cs: digitalio.DigitalInOut,
-        rst: Optional[digitalio] = None,
+        rst: Optional[digitalio.DigitalInOut] = None,
         width: int = 128,
         height: int = 160,
         baudrate: int = 16000000,