diff --git a/Lemuria.xcodeproj/project.pbxproj b/Lemuria.xcodeproj/project.pbxproj
index 7bcd6b0..68803e1 100644
--- a/Lemuria.xcodeproj/project.pbxproj
+++ b/Lemuria.xcodeproj/project.pbxproj
@@ -818,7 +818,7 @@
 				GCC_PREFIX_HEADER = Lemuria_Prefix.pch;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "@executable_path/../Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.9;
+				MACOSX_DEPLOYMENT_TARGET = 13.5;
 				PRODUCT_BUNDLE_IDENTIFIER = net.riverdark.Lemuria;
 				PRODUCT_NAME = Lemuria;
 				VERSIONING_SYSTEM = "";
@@ -840,7 +840,7 @@
 				GCC_PREFIX_HEADER = Lemuria_Prefix.pch;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "@executable_path/../Frameworks";
-				MACOSX_DEPLOYMENT_TARGET = 10.9;
+				MACOSX_DEPLOYMENT_TARGET = 13.5;
 				PRODUCT_BUNDLE_IDENTIFIER = net.riverdark.Lemuria;
 				PRODUCT_NAME = Lemuria;
 				VERSIONING_SYSTEM = "";
diff --git a/PSMTabBarControl/source/NSBezierPath_AMShading.m b/PSMTabBarControl/source/NSBezierPath_AMShading.m
index 1d1755b..26ab992 100755
--- a/PSMTabBarControl/source/NSBezierPath_AMShading.m
+++ b/PSMTabBarControl/source/NSBezierPath_AMShading.m
@@ -11,7 +11,7 @@
 
 @implementation NSBezierPath (AMShading)
 
-static void linearShadedColor(void *info, const float *in, float *out)
+static void linearShadedColor(void  * __nullable info, const double *in, double *out)
 {
 	float *colors = info;
 	*out++ = colors[0] + *in * colors[8];
@@ -20,7 +20,7 @@ static void linearShadedColor(void *info, const float *in, float *out)
 	*out++ = colors[3] + *in * colors[11];
 }
 
-static void bilinearShadedColor(void *info, const float *in, float *out)
+static void bilinearShadedColor(void  * __nullable info, const double *in, double *out)
 {
 	float *colors = info;
 	float factor = (*in)*2.0;