diff --git a/NEWS.rst b/NEWS.rst
index 1b0fb22a..a3ee6976 100644
--- a/NEWS.rst
+++ b/NEWS.rst
@@ -99,6 +99,9 @@ Modules 5.1.0 (not yet released)
   are getting unloaded. Update default :mconfig:`tag_abbrev` configuration
   option to add an abbreviation for the new tag (``kL``) and default light and
   dark color palettes.
+* Add the :mfcmd:`always-load` modulefile command for compatibility with Lmod
+  Tcl modulefiles. This command loads designated modulefile and applies the
+  ``keep-loaded`` tag to it.
 
 .. _Code of conduct: https://github.com/cea-hpc/modules/blob/master/CODE_OF_CONDUCT.md
 
diff --git a/doc/source/changes.rst b/doc/source/changes.rst
index 89e4aa80..da99d099 100644
--- a/doc/source/changes.rst
+++ b/doc/source/changes.rst
@@ -870,7 +870,7 @@ The following modulefile Tcl commands appeared on Modules 5.
 | 5.1        | :mfcmd:`add-property`, :mfcmd:`remove-property`,                |
 |            | :mfcmd:`extensions`, :mfcmd:`prereq-any`,                       |
 |            | :mfcmd:`require-fullname`, :mfcmd:`depends-on`,                 |
-|            | :mfcmd:`prereq-all`                                             |
+|            | :mfcmd:`prereq-all`, :mfcmd:`always-load`                       |
 +------------+-----------------------------------------------------------------+
 
 :mfcmd:`system`, :mfcmd:`is-used`
diff --git a/doc/source/modulefile.rst b/doc/source/modulefile.rst
index 934c4bfc..4d817aff 100644
--- a/doc/source/modulefile.rst
+++ b/doc/source/modulefile.rst
@@ -65,6 +65,27 @@ the Module commands return the empty string. Some commands behave differently
 when a *modulefile* is loaded or unloaded. The command descriptions assume
 the *modulefile* is being loaded.
 
+.. mfcmd:: always-load [--tag taglist] modulefile...
+
+ Load *modulefile* and apply the ``keep-loaded`` tag to it in order to avoid
+ the automatic unload of this *modulefile* when modules dependent of it are
+ unloaded.
+
+ *modulefile* is declared as a requirement of currently loading module. This
+ command acts as an alias of :mfcmd:`module load<module>` command. If more
+ than one *modulefile* are specified, then this list acts as a Boolean AND
+ operation, which means all specified *modulefiles* are required.
+
+ The ``--tag`` option accepts a list of module tags to apply to *modulefile*
+ once loaded in addition to the ``keep-loaded`` tag. *taglist* corresponds to
+ the concatenation of multiple tags separated by colon character. *taglist*
+ should not contain tags inherited from *modulefile* state or from other
+ modulefile commands.
+
+ .. only:: html
+
+    .. versionadded:: 5.1
+
 .. mfcmd:: append-path [-d C|--delim C|--delim=C] [--duplicates] variable value...
 
  See :mfcmd:`prepend-path`.