diff --git a/premake5.lua b/premake5.lua
index b1dc7b0..3ef5a70 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -1,7 +1,7 @@
 project "bakatools"
 	kind "StaticLib"
     language "C++"
-    cppdialect "C++17"
+    cppdialect "C++20"
     systemversion "latest"
     staticruntime "on"
 
diff --git a/src/bakatools/time/time.h b/src/bakatools/time/time.h
index 47d649e..a68eeb8 100644
--- a/src/bakatools/time/time.h
+++ b/src/bakatools/time/time.h
@@ -1,4 +1,4 @@
 #pragma once
 
-#include "time_span.h"
-#include "time_point.h"
+#include <bakatools/time/time_span.h>
+#include <bakatools/time/time_point.h>