diff --git a/include/__expected/bad_expected_access.h b/include/__expected/bad_expected_access.h
index 27f01d9..174f97f 100644
--- a/include/__expected/bad_expected_access.h
+++ b/include/__expected/bad_expected_access.h
@@ -20,7 +20,7 @@
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
-#if _LIBCPP_STD_VER >= 23
+#if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
diff --git a/include/__expected/expected.h b/include/__expected/expected.h
index 045370a..3f468fc 100644
--- a/include/__expected/expected.h
+++ b/include/__expected/expected.h
@@ -62,7 +62,7 @@
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
-#if _LIBCPP_STD_VER >= 23
+#if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
diff --git a/include/__expected/unexpect.h b/include/__expected/unexpect.h
index df52787..fc3be4c 100644
--- a/include/__expected/unexpect.h
+++ b/include/__expected/unexpect.h
@@ -15,7 +15,7 @@
 #  pragma GCC system_header
 #endif
 
-#if _LIBCPP_STD_VER >= 23
+#if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
diff --git a/include/__expected/unexpected.h b/include/__expected/unexpected.h
index c7fe3c5..928b677 100644
--- a/include/__expected/unexpected.h
+++ b/include/__expected/unexpected.h
@@ -34,7 +34,7 @@
 _LIBCPP_PUSH_MACROS
 #include <__undef_macros>
 
-#if _LIBCPP_STD_VER >= 23
+#if _LIBCPP_STD_VER >= 20
 
 _LIBCPP_BEGIN_NAMESPACE_STD