diff --git a/internal/action/defaults_darwin.go b/internal/action/defaults_darwin.go
index e1a54b79..4c781af8 100644
--- a/internal/action/defaults_darwin.go
+++ b/internal/action/defaults_darwin.go
@@ -62,6 +62,8 @@ var bufdefaults = map[string]string{
 	"PageDown":       "CursorPageDown",
 	"CtrlPageUp":     "PreviousTab",
 	"CtrlPageDown":   "NextTab",
+	"ShiftPageUp":    "SelectPageUp",
+	"ShiftPageDown":  "SelectPageDown",
 	"Ctrl-g":         "ToggleHelp",
 	"Alt-g":          "ToggleKeyMenu",
 	"Ctrl-r":         "ToggleRuler",
diff --git a/internal/action/defaults_other.go b/internal/action/defaults_other.go
index a932688a..d74c5096 100644
--- a/internal/action/defaults_other.go
+++ b/internal/action/defaults_other.go
@@ -65,6 +65,8 @@ var bufdefaults = map[string]string{
 	"PageDown":       "CursorPageDown",
 	"CtrlPageUp":     "PreviousTab",
 	"CtrlPageDown":   "NextTab",
+	"ShiftPageUp":    "SelectPageUp",
+	"ShiftPageDown":  "SelectPageDown",
 	"Ctrl-g":         "ToggleHelp",
 	"Alt-g":          "ToggleKeyMenu",
 	"Ctrl-r":         "ToggleRuler",
diff --git a/runtime/help/keybindings.md b/runtime/help/keybindings.md
index 0f327ea6..a47fdfe5 100644
--- a/runtime/help/keybindings.md
+++ b/runtime/help/keybindings.md
@@ -512,6 +512,8 @@ conventions for text editing defaults.
     "PageDown":       "CursorPageDown",
     "CtrlPageUp":     "PreviousTab",
     "CtrlPageDown":   "NextTab",
+    "ShiftPageUp":    "SelectPageUp",
+    "ShiftPageDown":  "SelectPageDown",
     "Ctrl-g":         "ToggleHelp",
     "Alt-g":          "ToggleKeyMenu",
     "Ctrl-r":         "ToggleRuler",