diff --git a/.spi.yml b/.spi.yml
new file mode 100644
index 0000000..bb19088
--- /dev/null
+++ b/.spi.yml
@@ -0,0 +1,5 @@
+version: 1
+builder:
+  configs:
+  - scheme: ConcurrencyExtras
+    documentation_targets: [ConcurrencyExtras]