diff --git a/README.md b/README.md
index 09527d4..e4a71dd 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,8 @@ Based loosely off sc-im (spreadsheet calculator improvised), which has dumb keyb
 | `gg` | Go to beginning of the column |
 | `G` | Go to end of column |
 | `gG` | Go to end of the the visual column |
+| `u`/`Page Down` | Undo[^undo] |
+| `Page Up` | Redo[^undo] |
 | `i`/`a` | Enter insert mode on current cell |
 | `r` | Enter insert mode on current cell, deleting contents |
 | `v` | Enter visual mode |
@@ -43,6 +45,8 @@ Based loosely off sc-im (spreadsheet calculator improvised), which has dumb keyb
 | n`G` | Jump to row "n" |
 | nX | Press "X", "n" times |
 
+[^undo]: Page up/down keybinds are (probably) temporary until I can get ctrl+r to work for redo, which is the propper key for this action. See issue #25 for the status on this.
+
 ### Visual mode
 
 | Key | Action |