diff --git a/changelog.d/13866.bugfix b/changelog.d/13866.bugfix
new file mode 100644
index 000000000..8630d3b22
--- /dev/null
+++ b/changelog.d/13866.bugfix
@@ -0,0 +1 @@
+Fix building from packaged sdist. Broke in v1.68.0rc1.
diff --git a/pyproject.toml b/pyproject.toml
index 43f165b8d..815cf4751 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -88,6 +88,7 @@ include = [
     { path = "Cargo.toml", format = "sdist" },
     { path = "rust/Cargo.toml", format = "sdist" },
     { path = "rust/Cargo.lock", format = "sdist" },
+    { path = "rust/build.rs", format = "sdist" },
     { path = "rust/src/**", format = "sdist" },
 ]
 exclude = [