diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 989572ba..69e2d8cb 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Added `Ctrl+J` as a default newline keybinding alongside `Shift+Enter`.
 - Renamed the displayed `zai` provider label to ZAI Coding Plan (Global) for clarity ([#5965](https://github.com/earendil-works/pi/issues/5965)).
 
 ## [0.79.10] - 2026-06-22
diff --git a/packages/coding-agent/docs/keybindings.md b/packages/coding-agent/docs/keybindings.md
index 333b94e3..a15a25a0 100644
--- a/packages/coding-agent/docs/keybindings.md
+++ b/packages/coding-agent/docs/keybindings.md
@@ -54,7 +54,7 @@ Modifier combinations: `ctrl+shift+x`, `alt+ctrl+x`, `ctrl+shift+alt+x`, `ctrl+1
 
 | Keybinding id | Default | Description |
 |--------|---------|-------------|
-| `tui.input.newLine` | `shift+enter` | Insert new line |
+| `tui.input.newLine` | `shift+enter`, `ctrl+j` | Insert new line |
 | `tui.input.submit` | `enter` | Submit input |
 | `tui.input.tab` | `tab` | Tab / autocomplete |
 
diff --git a/packages/coding-agent/docs/terminal-setup.md b/packages/coding-agent/docs/terminal-setup.md
index ff1638b5..d2a8fb92 100644
--- a/packages/coding-agent/docs/terminal-setup.md
+++ b/packages/coding-agent/docs/terminal-setup.md
@@ -30,13 +30,7 @@ That mapping sends a raw linefeed byte. Inside pi, that is indistinguishable fro
 
 If Claude Code 2.x or newer is the only reason you added that mapping, you can remove it, unless you want to use Claude Code in tmux, where it still requires that Ghostty mapping.
 
-If you want `Shift+Enter` to keep working in tmux via that remap, add `ctrl+j` to your pi `newLine` keybinding in `~/.pi/agent/keybindings.json`:
-
-```json
-{
-  "newLine": ["shift+enter", "ctrl+j"]
-}
-```
+Pi binds `Ctrl+J` as a default newline alias, so `Shift+Enter` keeps working in tmux via that remap without extra pi configuration.
 
 ## WezTerm
 
diff --git a/packages/tui/CHANGELOG.md b/packages/tui/CHANGELOG.md
index 0a34ae38..a3cf70ef 100644
--- a/packages/tui/CHANGELOG.md
+++ b/packages/tui/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Changed
+
+- Added `Ctrl+J` as a default newline keybinding alongside `Shift+Enter`.
+
 ## [0.79.10] - 2026-06-22
 
 ## [0.79.9] - 2026-06-20
diff --git a/packages/tui/src/keybindings.ts b/packages/tui/src/keybindings.ts
index 789124ad..eaf0838b 100644
--- a/packages/tui/src/keybindings.ts
+++ b/packages/tui/src/keybindings.ts
@@ -115,7 +115,7 @@ export const TUI_KEYBINDINGS = {
 	"tui.editor.yank": { defaultKeys: "ctrl+y", description: "Yank" },
 	"tui.editor.yankPop": { defaultKeys: "alt+y", description: "Yank pop" },
 	"tui.editor.undo": { defaultKeys: "ctrl+-", description: "Undo" },
-	"tui.input.newLine": { defaultKeys: "shift+enter", description: "Insert newline" },
+	"tui.input.newLine": { defaultKeys: ["shift+enter", "ctrl+j"], description: "Insert newline" },
 	"tui.input.submit": { defaultKeys: "enter", description: "Submit input" },
 	"tui.input.tab": { defaultKeys: "tab", description: "Tab / autocomplete" },
 	"tui.input.copy": { defaultKeys: "ctrl+c", description: "Copy selection" },
diff --git a/packages/tui/test/keybindings.test.ts b/packages/tui/test/keybindings.test.ts
index 37c67442..8bd7f438 100644
--- a/packages/tui/test/keybindings.test.ts
+++ b/packages/tui/test/keybindings.test.ts
@@ -3,6 +3,14 @@ import { describe, it } from "node:test";
 import { KeybindingsManager, TUI_KEYBINDINGS } from "../src/keybindings.ts";
 
 describe("KeybindingsManager", () => {
+	it("binds Ctrl+J as a default newline alias", () => {
+		const keybindings = new KeybindingsManager(TUI_KEYBINDINGS);
+
+		assert.deepStrictEqual(keybindings.getKeys("tui.input.newLine"), ["shift+enter", "ctrl+j"]);
+		assert.strictEqual(keybindings.matches("\n", "tui.input.newLine"), true);
+		assert.strictEqual(keybindings.matches("\x1b[106;5u", "tui.input.newLine"), true);
+	});
+
 	it("does not evict selector confirm when input submit is rebound", () => {
 		const keybindings = new KeybindingsManager(TUI_KEYBINDINGS, {
 			"tui.input.submit": ["enter", "ctrl+enter"],