diff --git a/pyproject.toml b/pyproject.toml
index 9efaced8..17123620 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,4 +31,4 @@ archs = ["AMD64", "x86"]
 # x86_64 and one of universal2 or arm64 wheels.  x86_64 is still required by older pips,
 # so additional arm64 wheels would suffice.  However, since the library build uses a mixed
 # amd64/arm64 setup, we build universal2 wheels regardless.
-archs = ["x86_64", "universal2"]
+archs = ["x86_64", "arm64", "universal2"]