diff --git a/pymake/utils/_compiler_switches.py b/pymake/utils/_compiler_switches.py
index d19eff4..9e37669 100644
--- a/pymake/utils/_compiler_switches.py
+++ b/pymake/utils/_compiler_switches.py
@@ -830,7 +830,7 @@ def _set_fflags(target, fc="gfortran", argv=True, osname=None, verbose=False):
                     "-Wunused-label",
                     "-Wunused-variable",
                     "-pedantic",
-                    "-std=f2008",
+                    "-std=f2018",
                     "-Wcharacter-truncation",
                 ]
 
diff --git a/pymake/utils/_meson_build.py b/pymake/utils/_meson_build.py
index 0a18d45..5644c2c 100644
--- a/pymake/utils/_meson_build.py
+++ b/pymake/utils/_meson_build.py
@@ -551,7 +551,7 @@ def _create_main_meson_build(
         else:
             line += "false',\n"
         if target in ("mf6", "libmf6", "zbud6"):
-            line += "\t\t'fortran_std=f2008'\n"
+            line += "\t\t'fortran_std=f2018'\n"
         line += "\t])\n\n"
         f.write(line)