diff --git a/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme b/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme
index 474fa352ea..3534e99265 100644
--- a/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme	
+++ b/OSBindings/Mac/Clock Signal.xcodeproj/xcshareddata/xcschemes/Clock Signal.xcscheme	
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
    LastUpgradeVersion = "1400"
-   version = "1.8">
+   version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
diff --git a/Storage/Automation/CSL.hpp b/Storage/Automation/CSL.hpp
index 0322384028..9e84ee1009 100644
--- a/Storage/Automation/CSL.hpp
+++ b/Storage/Automation/CSL.hpp
@@ -11,6 +11,7 @@
 #include <cstdint>
 #include <optional>
 #include <string>
+#include <variant>
 #include <vector>
 
 namespace Storage::Automation::CSL {