diff --git a/README.md b/README.md
index c679439..191abf1 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,7 @@ See [action.yml](./action.yml) for more detailed information.
 * envs - pass environment variable to shell script
 * debug - enable debug mode
 * use_insecure_cipher - include more ciphers with use_insecure_cipher (see [#56](https://github.com/appleboy/ssh-action/issues/56))
+* cipher - the allowed cipher algorithms. If unspecified then a sensible
 
 SSH Proxy Setting:
 
@@ -76,6 +77,7 @@ SSH Proxy Setting:
 * proxy_key_path - path of ssh proxy private key
 * proxy_fingerprint - fingerprint SHA256 of the proxy host public key, default is to skip verification
 * proxy_use_insecure_cipher - include more ciphers with use_insecure_cipher (see [#56](https://github.com/appleboy/ssh-action/issues/56))
+* proxy_cipher - the allowed cipher algorithms. If unspecified then a sensible
 
 ### Example
 
diff --git a/action.yml b/action.yml
index b15f758..65891e8 100644
--- a/action.yml
+++ b/action.yml
@@ -19,6 +19,8 @@ inputs:
   use_insecure_cipher:
     description: 'include more ciphers with use_insecure_cipher'
     default: false
+  cipher:
+    description: 'the allowed cipher algorithms. If unspecified then a sensible'
   timeout:
     description: 'timeout for ssh to host'
     default: "30s"
@@ -51,6 +53,8 @@ inputs:
     description: 'path of ssh proxy private key'
   proxy_fingerprint:
     description: 'sha256 fingerprint of the proxy host public key'
+  proxy_cipher:
+    description: 'the allowed cipher algorithms. If unspecified then a sensible'
   proxy_use_insecure_cipher:
     description: 'include more ciphers with use_insecure_cipher'
     default: false