diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea3d2d24..1f267fa2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -76,6 +76,8 @@
   is not executed).
 * `gettimeofday()` has been replaced with `clock_gettime()`, due to it being
   marked as obsolete by POSIX.
+* `alt+tab` now emits `ESC \t` instead of `CSI 27;3;9~`
+  (https://codeberg.org/dnkl/foot/issues/900).
 
 
 ### Deprecated
diff --git a/keymap.h b/keymap.h
index 6b882391..9793d882 100644
--- a/keymap.h
+++ b/keymap.h
@@ -65,7 +65,8 @@ static const struct key_data key_return[] = {
 static const struct key_data key_tab[] = {
     {MOD_SHIFT | MOD_MODIFY_OTHER_KEYS_STATE1,  CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[Z"},
     {MOD_SHIFT | MOD_MODIFY_OTHER_KEYS_STATE2,  CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;2;9~"},
-    {MOD_ALT,                                   CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;3;9~"},
+    {MOD_ALT | MOD_MODIFY_OTHER_KEYS_STATE1,    CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033\t"},
+    {MOD_ALT | MOD_MODIFY_OTHER_KEYS_STATE2,    CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;3;9~"},
     {MOD_SHIFT | MOD_ALT,                       CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;4;9~"},
     {MOD_CTRL,                                  CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;5;9~"},
     {MOD_SHIFT | MOD_CTRL,                      CURSOR_KEYS_DONTCARE, KEYPAD_DONTCARE, "\033[27;6;9~"},