From e2777ee6aa0c92ac5893e39a01177053bd86b39f Mon Sep 17 00:00:00 2001
From: Jon Gjengset <jongje@amazon.com>
Date: Mon, 30 Aug 2021 09:27:14 -0700
Subject: [PATCH] Document stabilization version

---
 src/doc/src/reference/unstable.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/doc/src/reference/unstable.md b/src/doc/src/reference/unstable.md
index 5e522485923..b64b841de82 100644
--- a/src/doc/src/reference/unstable.md
+++ b/src/doc/src/reference/unstable.md
@@ -1437,3 +1437,10 @@ serde = "1.0.117"
 [profile.dev.package.foo]
 codegen-backend = "cranelift"
 ```
+
+### patch-in-config
+
+The `-Z patch-in-config` flag, and the corresponding support for
+`[patch]` section in Cargo configuration files has been stabilized in
+the 1.56 release. See the [patch field](config.html#patch) for more
+information.