diff --git a/src/systemd/meson.build b/src/systemd/meson.build
index 5a8f1abcf6..c9c484b411 100644
--- a/src/systemd/meson.build
+++ b/src/systemd/meson.build
@@ -64,6 +64,9 @@ if add_languages('cpp', required : false)
         if cxx.has_argument('-std=c++17')
                 opts += [['c++', '-std=c++17']]
         endif
+        if cxx.has_argument('-std=c++20')
+                opts += [['c++', '-std=c++20']]
+        endif
 endif
 
 foreach header : _systemd_headers + _not_installed_headers + [libudev_h_path]