diff --git a/stdlib/colorsys.pyi b/stdlib/colorsys.pyi
index 00c5f9d22..443ee828e 100644
--- a/stdlib/colorsys.pyi
+++ b/stdlib/colorsys.pyi
@@ -1,3 +1,5 @@
+__all__ = ["rgb_to_yiq", "yiq_to_rgb", "rgb_to_hls", "hls_to_rgb", "rgb_to_hsv", "hsv_to_rgb"]
+
 def rgb_to_yiq(r: float, g: float, b: float) -> tuple[float, float, float]: ...
 def yiq_to_rgb(y: float, i: float, q: float) -> tuple[float, float, float]: ...
 def rgb_to_hls(r: float, g: float, b: float) -> tuple[float, float, float]: ...