diff --git a/README.md b/README.md
index 25fde90b9..62f8fdc64 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ If your platform is not supported, or you just want to be able to edit the sourc
 - [OpenBSD (fi)](https://docs-develop.pleroma.social/backend/installation/openbsd_fi/)
 
 ### OS/Distro packages
-Currently Pleroma is packaged for [YunoHost](https://yunohost.org). If you want to package Pleroma for any OS/Distros, we can guide you through the process on our [community channels](#community-channels). If you want to change default options in your Pleroma package, please **discuss it with us first**.
+Currently Pleroma is packaged for [YunoHost](https://yunohost.org) and [NixOS](https://nixos.org). If you want to package Pleroma for any OS/Distros, we can guide you through the process on our [community channels](#community-channels). If you want to change default options in your Pleroma package, please **discuss it with us first**.
 
 ### Docker
 While we don’t provide docker files, other people have written very good ones. Take a look at <https://github.com/angristan/docker-pleroma> or <https://glitch.sh/sn0w/pleroma-docker>.
diff --git a/docs/installation/nixos_en.md b/docs/installation/nixos_en.md
new file mode 100644
index 000000000..f3c4988b1
--- /dev/null
+++ b/docs/installation/nixos_en.md
@@ -0,0 +1,15 @@
+# Installing on NixOS
+
+NixOS contains a source build package of pleroma and a NixOS module to install it.
+For installation add this to your configuration.nix and add a config.exs next to it:
+```nix
+  services.pleroma = {
+    enable = true;
+    configs = [ (lib.fileContents ./config.exs) ];
+    secretConfigFile = "/var/lib/pleroma/secret.exs";
+  };
+```
+
+## Questions
+The nix community uses matrix for communication: [#nix:nixos.org](https://matrix.to/#/#nix:nixos.org)
+
diff --git a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
index c0c7f3806..829ddeaea 100644
--- a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
@@ -40,9 +40,9 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
 
   defp check_media_removal(
          %{host: actor_host} = _actor_info,
-         %{"type" => "Create", "object" => %{"attachment" => child_attachment}} = object
+         %{"type" => type, "object" => %{"attachment" => child_attachment}} = object
        )
-       when length(child_attachment) > 0 do
+       when length(child_attachment) > 0 and type in ["Create", "Update"] do
     media_removal =
       instance_list(:media_removal)
       |> MRF.subdomains_regex()
@@ -63,10 +63,11 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
   defp check_media_nsfw(
          %{host: actor_host} = _actor_info,
          %{
-           "type" => "Create",
+           "type" => type,
            "object" => %{} = _child_object
          } = object
-       ) do
+       )
+       when type in ["Create", "Update"] do
     media_nsfw =
       instance_list(:media_nsfw)
       |> MRF.subdomains_regex()
diff --git a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
index 10072b693..73760ca8f 100644
--- a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
@@ -27,22 +27,22 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
   defp process_tag(
          "mrf_tag:media-force-nsfw",
          %{
-           "type" => "Create",
+           "type" => type,
            "object" => %{"attachment" => child_attachment}
          } = message
        )
-       when length(child_attachment) > 0 do
+       when length(child_attachment) > 0 and type in ["Create", "Update"] do
     {:ok, Kernel.put_in(message, ["object", "sensitive"], true)}
   end
 
   defp process_tag(
          "mrf_tag:media-strip",
          %{
-           "type" => "Create",
+           "type" => type,
            "object" => %{"attachment" => child_attachment} = object
          } = message
        )
-       when length(child_attachment) > 0 do
+       when length(child_attachment) > 0 and type in ["Create", "Update"] do
     object = Map.delete(object, "attachment")
     message = Map.put(message, "object", object)
 
@@ -152,7 +152,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
     do: filter_message(target_actor, message)
 
   @impl true
-  def filter(%{"actor" => actor, "type" => "Create"} = message),
+  def filter(%{"actor" => actor, "type" => type} = message) when type in ["Create", "Update"],
     do: filter_message(actor, message)
 
   @impl true
diff --git a/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs b/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs
index 674b506c3..57fc00af5 100644
--- a/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs
+++ b/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs
@@ -57,6 +57,16 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
 
       assert SimplePolicy.filter(local_message) == {:ok, local_message}
     end
+
+    test "works with Updates" do
+      clear_config([:mrf_simple, :media_removal], [{"remote.instance", "Some reason"}])
+      media_message = build_media_message(type: "Update")
+
+      assert SimplePolicy.filter(media_message) ==
+               {:ok,
+                media_message
+                |> Map.put("object", Map.delete(media_message["object"], "attachment"))}
+    end
   end
 
   describe "when :media_nsfw" do
@@ -90,12 +100,20 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
 
       assert SimplePolicy.filter(local_message) == {:ok, local_message}
     end
+
+    test "works with Updates" do
+      clear_config([:mrf_simple, :media_nsfw], [{"remote.instance", "Whetever"}])
+      media_message = build_media_message(type: "Update")
+
+      assert SimplePolicy.filter(media_message) ==
+               {:ok, put_in(media_message, ["object", "sensitive"], true)}
+    end
   end
 
-  defp build_media_message do
+  defp build_media_message(opts \\ []) do
     %{
       "actor" => "https://remote.instance/users/bob",
-      "type" => "Create",
+      "type" => opts[:type] || "Create",
       "object" => %{
         "attachment" => [%{}],
         "tag" => ["foo"],
diff --git a/test/pleroma/web/activity_pub/mrf/tag_policy_test.exs b/test/pleroma/web/activity_pub/mrf/tag_policy_test.exs
index 46be316ee..a0db8df54 100644
--- a/test/pleroma/web/activity_pub/mrf/tag_policy_test.exs
+++ b/test/pleroma/web/activity_pub/mrf/tag_policy_test.exs
@@ -99,6 +99,24 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicyTest do
 
       assert TagPolicy.filter(message) == {:ok, except_message}
     end
+
+    test "removes attachments in Updates" do
+      actor = insert(:user, tags: ["mrf_tag:media-strip"])
+
+      message = %{
+        "actor" => actor.ap_id,
+        "type" => "Update",
+        "object" => %{"attachment" => ["file1"]}
+      }
+
+      except_message = %{
+        "actor" => actor.ap_id,
+        "type" => "Update",
+        "object" => %{}
+      }
+
+      assert TagPolicy.filter(message) == {:ok, except_message}
+    end
   end
 
   describe "mrf_tag:media-force-nsfw" do
@@ -119,5 +137,23 @@ defmodule Pleroma.Web.ActivityPub.MRF.TagPolicyTest do
 
       assert TagPolicy.filter(message) == {:ok, except_message}
     end
+
+    test "Mark as sensitive on presence of attachments in Updates" do
+      actor = insert(:user, tags: ["mrf_tag:media-force-nsfw"])
+
+      message = %{
+        "actor" => actor.ap_id,
+        "type" => "Update",
+        "object" => %{"tag" => ["test"], "attachment" => ["file1"]}
+      }
+
+      except_message = %{
+        "actor" => actor.ap_id,
+        "type" => "Update",
+        "object" => %{"tag" => ["test"], "attachment" => ["file1"], "sensitive" => true}
+      }
+
+      assert TagPolicy.filter(message) == {:ok, except_message}
+    end
   end
 end