diff --git a/README.md b/README.md
index 72ca553..c4926d9 100644
--- a/README.md
+++ b/README.md
@@ -12,4 +12,18 @@ Upcoming flakes:
 
     $ nix build .#deploy.nodes.hel1-a.profiles.system.path
 
+Managing secrets
+----------------
+
+Encode a secret on host:
+
+    rage -e -r $(ssh-to-age < /etc/ssh/ssh_host_ed25519_key.pub) -o secret.age /etc/plaintext
+
+Decode a secret on host (to test things out):
+
+    age -d -i <(sudo ssh-to-age -private-key -i /etc/ssh/ssh_host_ed25519_key) secret.age
+
+If/when [str4d/rage#379](https://github.com/str4d/rage/issues/379) is fixed, we
+can replace the above command to `rage`.
+
 [1]: https://cgit.krebsco.de/krops/about/