diff --git a/Lib/_pyrepl/historical_reader.py b/Lib/_pyrepl/historical_reader.py
index 5cc82690ae36fc..e6635ef323d02f 100644
--- a/Lib/_pyrepl/historical_reader.py
+++ b/Lib/_pyrepl/historical_reader.py
@@ -264,6 +264,7 @@ def collect_keymap(self) -> tuple[tuple[KeySpec, CommandName], ...]:
             (r"\C-s", "forward-history-isearch"),
             (r"\M-r", "restore-history"),
             (r"\M-.", "yank-arg"),
+            (r"\M-_", "yank-arg"),
             (r"\<page down>", "history-search-forward"),
             (r"\x1b[6~", "history-search-forward"),
             (r"\<page up>", "history-search-backward"),
diff --git a/Misc/NEWS.d/next/Library/2026-03-31-21-25-44.gh-issue-147950.5JR0sK.rst b/Misc/NEWS.d/next/Library/2026-03-31-21-25-44.gh-issue-147950.5JR0sK.rst
new file mode 100644
index 00000000000000..48c50efb3b0cb2
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-03-31-21-25-44.gh-issue-147950.5JR0sK.rst
@@ -0,0 +1 @@
+Bind ``yank-arg`` to :kbd:`M-_` in the REPL.