diff --git a/pkgs/generate-secrets-deprecated.nix b/pkgs/generate-secrets-deprecated.nix
index 4bb491b..c54ff59 100644
--- a/pkgs/generate-secrets-deprecated.nix
+++ b/pkgs/generate-secrets-deprecated.nix
@@ -11,4 +11,15 @@ throw ''
   else
     cp ${toString ../examples/shell.nix} .
   fi
+
+  Note to NixOps users:
+  - After updating `shell.nix`, secrets are no longer auto-generated
+    when starting the shell. Please manually run shell command `generate-secrets`
+    before deploying.
+  - NixOps version 19.09 that shipped with nix-bitcoin is deprecated and is no longer
+    available in the shell.
+    Instead, you can add a current NixOps version to your shell PATH via `extraShellInitCmds`
+    or migrate to the krops deployment method.
+    See here for a migration guide:
+    ${toString ../docs/nixops-krops-migration.md}
 ''