diff --git a/.spi.yml b/.spi.yml
index 7700a67..ab09cfc 100644
--- a/.spi.yml
+++ b/.spi.yml
@@ -9,4 +9,5 @@ builder:
     scheme: ExtractCaseValue
   - platform: watchos
     scheme: ExtractCaseValue
-  - documentation_targets: [ExtractCaseValue]
\ No newline at end of file
+  - documentation_targets: [ExtractCaseValue]
+    swift_version: 5.9