diff --git a/meson.build b/meson.build
index 6784e09..435f96e 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@ project('pkgfile', 'cpp',
         version : '21',
         license : 'MIT',
         default_options : [
-          'cpp_std=c++17',
+          'cpp_std=c++20',
           'warning_level=3',
           'prefix=/usr',
         ])
diff --git a/src/filter.cc b/src/filter.cc
index e0d7c69..7dfbc20 100644
--- a/src/filter.cc
+++ b/src/filter.cc
@@ -7,7 +7,7 @@ namespace pkgfile {
 namespace filter {
 
 bool Directory::Matches(std::string_view line) const {
-  return !line.empty() && line.back() == '/';
+  return line.ends_with('/');
 }
 
 bool Bin::Matches(std::string_view line) const {