diff --git a/var/spack/repos/builtin/packages/fms/package.py b/var/spack/repos/builtin/packages/fms/package.py
index 042ef0cc121..89d33d89586 100644
--- a/var/spack/repos/builtin/packages/fms/package.py
+++ b/var/spack/repos/builtin/packages/fms/package.py
@@ -18,6 +18,8 @@ class Fms(CMakePackage):
     license("LGPL-3.0-or-later")
 
     maintainers("AlexanderRichert-NOAA", "Hang-Lei-NOAA", "edwardhartnett", "rem1776", "climbfuji")
+    version("2025.01", sha256="19997ef5468a06c60c1e7af3a56ab7f8a33da814a30827293ca34df5bd888d6f")
+    version("2024.03", sha256="4c1e6bdfafcfec19a4a1c08770c313ab3135d47ec8319f6b07f24d2589caf44d")
     version("2024.02", sha256="47e5740bb066f5eb032e1de163eb762c7258880a2932f4cc4e34e769e0cc2b0e")
     version(
         "2024.01.01", sha256="41c8686bad2b1aed76275e35cbe1af855f7dfce9b6d8907744ea2e8174758f6a"
@@ -64,6 +66,13 @@ class Fms(CMakePackage):
         when="@2023.03",
     )
 
+    variant(
+        "portable_kinds",
+        description="Use iso_c_binding variable kinds",
+        when="@2025.01:",
+        default=False,
+    )
+
     variant("shared", description="Build shared libraries", when="@2024.02:", default=False)
     # What the following patch is providing is available in version 2024.03
     # and newer so it is only needed to 2024.02
@@ -131,6 +140,7 @@ def cmake_args(self):
             self.define_from_variant("OPENMP"),
             self.define_from_variant("ENABLE_QUAD_PRECISION", "quad_precision"),
             self.define_from_variant("SHARED_LIBS", "shared"),
+            self.define_from_variant("PORTABLE_KINDS", "portable_kinds"),
             self.define_from_variant("WITH_YAML", "yaml"),
             self.define_from_variant("CONSTANTS"),
             self.define_from_variant("LARGEFILE", "large_file"),