diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f0675f0e2a..ed333283ac7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -292,6 +292,7 @@ Added items to the public API
 - Validate that map_async's range is not negative by @nical in [#2938](https://github.com/gfx-rs/wgpu/pull/2938)
 - Fix calculation/validation of layer/mip ranges in create_texture_view by @nical in [#2955](https://github.com/gfx-rs/wgpu/pull/2955)
 - Validate the sample count and mip level in `copy_texture_to_buffer` by @nical in [#2958](https://github.com/gfx-rs/wgpu/pull/2958)
+- Expose the cause of the error in the `map_async` callback in [#2939](https://github.com/gfx-rs/wgpu/pull/2939)
 
 #### DX12