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diff --git a/README.md b/README.md
index 2d34a06..e8a9835 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ The default mappings are as follows:
 - <kbd>r</kbd>: reload current tab
 - <kbd>R</kbd>: reload current tab without cache
 - <kbd>zp</kbd>: toggle pin/unpin current tab
+- <kbd>zd</kbd>: duplicate current tab
 
 ### Navigation
 - <kbd>f</kbd>: start following links in the page