diff --git a/README.md b/README.md
index 62ef6ce..a8ac491 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,7 @@ Unsupported:
 - Compression via `--compress` other than empty or `lzo`
 - Connecting via proxy
 - External file references (inline `<block>` only)
+- Static key encryption (non-TLS)
 - `<connection>` blocks
 
 Ignored: