diff --git a/gpg/README.md b/gpg/README.md
index bd4b5b2..b46cfc3 100644
--- a/gpg/README.md
+++ b/gpg/README.md
@@ -30,6 +30,10 @@ Verify:
 
     gpg --export --armor <user-id> | xclip -sel clip
 
+### Copy Private key (Caution)
+
+    gpg --export-secret-keys -a <user-id> | xclip -sel clip
+
 ### Change password gpg
 
     gpg --edit-key <user-id>