diff --git a/README.md b/README.md
index f45053a..f14dc16 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,5 @@
 # rasterio-wheels
 
-Rasterio wheel builds based on https://github.com/multi-build/multibuild.
-
 This project builds the rasterio binary distributions that are uploaded to
 PyPI. Those distributions, or "wheels", include a GDAL shared library and other
 shared libraries supporting many, but not all, of GDAL's format drivers. If you
@@ -9,12 +7,7 @@ need the rarely used formats and compressors not found in these wheels, you may
 find them in the conda-forge conda channel, or in Docker images published by
 the GDAL project.
 
-Wheels for x86_64 manylinux2014 and macos Pythons 3.7-3.10 are built by GitHub
-Actions.
-
-Wheels for aarch64 linux and arm64 macos are complicated by limited
-availability of build instances and cross-compilation issues within GDAL's
-dependencies. See the issue tracker for details.
+Wheels for manylinux2014_x86_64, macos_10_15_x86_64, and win_amd64 are built by GitHub
+Actions. Wheels for macosx_11_0_arm64 are built by Cirrus CI.
 
-Wheels for windows are not available. We don't have enough Windows experience
-in this project yet.
+Other platforms are out of scope at this time.