diff --git a/doc/api_module.rst b/doc/api_module.rst
index e2a5c6a11..6d84e214b 100644
--- a/doc/api_module.rst
+++ b/doc/api_module.rst
@@ -19,6 +19,8 @@
  Modularity Interface
 =====================
 
+.. warning:: Modularity is deprecated, and functionality will be removed in a future release of DNF5.
+
 .. module:: dnf.module.module_base
 
 
diff --git a/doc/command_ref.rst b/doc/command_ref.rst
index f7b8e22c8..4e3077283 100644
--- a/doc/command_ref.rst
+++ b/doc/command_ref.rst
@@ -1025,6 +1025,8 @@ Module Command
 
 | Command: ``module``
 
+.. warning:: Modularity is deprecated, and functionality will be removed in a future release of DNF5.
+
 Modularity overview is available at :ref:`man page dnf.modularity(7) <modularity-label>`.
 Module subcommands take :ref:`\<module-spec>\ <specifying_modules-label>`... arguments that specify modules or profiles.
 
diff --git a/doc/modularity.rst b/doc/modularity.rst
index 8ebd07e23..3683bc608 100644
--- a/doc/modularity.rst
+++ b/doc/modularity.rst
@@ -21,10 +21,11 @@
  Modularity
 ############
 
+.. warning:: Modularity is deprecated, and functionality will be removed in a future release of DNF5.
+
 Modularity is new way of building, organizing and delivering packages.
 For more details see: https://docs.pagure.org/modularity/
 
-
 =============
  Definitions
 =============