diff --git a/spec/context/dimension.fmf b/spec/context/dimension.fmf
index 8f82d6392a..bd9c2fc9bb 100644
--- a/spec/context/dimension.fmf
+++ b/spec/context/dimension.fmf
@@ -14,6 +14,15 @@ description: |
         runs (fedora, fedora-33, centos, centos-8, centos-8.4,
         centos-stream, centos-stream-9, rhel, rhel-8, rhel-8.4).
 
+    distro-mode
+        Distribution mode, ``package`` for the standard way using
+        packages or ``image`` for the new way of distributing
+        using container images.
+
+    image-mode
+        Flag denoting how new content is distributed. Use ``true``
+        for container images and ``false`` for standard packages.
+
     variant
         The distribution variant (Client, Desktop, Server
         Workstation, Silverblue, CoreOS).