diff --git a/Config_HIRT.xcconfig b/Config_HIRT.xcconfig
index 0b0e29d..929e31f 100644
--- a/Config_HIRT.xcconfig
+++ b/Config_HIRT.xcconfig
@@ -25,8 +25,8 @@ CLANG_CXX_LIBRARY = libc++
 
 // This matches with Cycling's maximum backward compatibility
 
-BASE_SDK = 10.11
-MACOSX_DEPLOYMENT_TARGET = 10.11
+BASE_SDK = 10.13
+MACOSX_DEPLOYMENT_TARGET = 10.13
 
 // Build a Universal Binary
 
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index b94349b..eb39bbf 100644
--- a/HISSTools_IR_Toolbox.xcodeproj/project.pbxproj
+++ b/HISSTools_IR_Toolbox.xcodeproj/project.pbxproj
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@@ -1654,156 +1633,6 @@
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diff --git a/HISSTools_Packaging/HISSTools Impulse Response Toolbox (HIRT)/package-info.json b/HISSTools_Packaging/HISSTools Impulse Response Toolbox (HIRT)/package-info.json
index c9db6ef..b25bf0a 100644
--- a/HISSTools_Packaging/HISSTools Impulse Response Toolbox (HIRT)/package-info.json	
+++ b/HISSTools_Packaging/HISSTools Impulse Response Toolbox (HIRT)/package-info.json	
@@ -13,7 +13,7 @@
 	"max_version_max" : "none",
 	"os" : 	{
 		"macintosh" : 		{
-			"min_version" : "10.11.x",
+			"min_version" : "10.13.x",
 			"platform" : [ "x64", "aarch64" ]
 		}
 ,