From 11c6e896b640008f6ba18d945f65c97ac04ee0be Mon Sep 17 00:00:00 2001
From: Oscar Dowson <odow@users.noreply.github.com>
Date: Thu, 11 Apr 2024 20:08:49 +1200
Subject: [PATCH] Prep for v1.21.1 (#3726)

---
 Project.toml          |  2 +-
 docs/packages.toml    |  2 +-
 docs/src/changelog.md | 15 +++++++++++++++
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/Project.toml b/Project.toml
index c79144887f6..4c5f60f31a5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "JuMP"
 uuid = "4076af6c-e467-56ae-b986-b466b2749572"
 repo = "https://github.com/jump-dev/JuMP.jl.git"
-version = "1.21.0"
+version = "1.21.1"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
diff --git a/docs/packages.toml b/docs/packages.toml
index 9033c39fdd4..33140962e33 100644
--- a/docs/packages.toml
+++ b/docs/packages.toml
@@ -81,7 +81,7 @@
 # [Penopt]
 #     rev = "486f07d3f3a11f12012ea3ada702a3ee55c8fdc5"
 [PolyJuMP]
-    rev = "v0.7.3"
+    rev = "v0.7.4"
     extension = true
 [SCS]
     rev = "v2.0.0"
diff --git a/docs/src/changelog.md b/docs/src/changelog.md
index 037b9be5385..0276fb94ae0 100644
--- a/docs/src/changelog.md
+++ b/docs/src/changelog.md
@@ -7,6 +7,21 @@ CurrentModule = JuMP
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Version 1.21.1 (April 11, 2024)
+
+### Fixed
+
+ - Fixed behavior of complex-value related functions like `real`, `imag`, `conj`
+   and `abs2` when called on [`GenericNonlinearExpr`](@ref). This fixes a method
+   error when calling `x'` where `x` is an array of nonlinear expressions. As a
+   related consequence, we now always error when creating nonlinear expressions
+   with complex components. Previously, only some constructors were checked for
+   complex expressionns. (#3724)
+
+### Other
+
+ - Documentation improvements (#3719) (#3720) (#3721) (#3722)
+
 ## Version 1.21.0 (March 31, 2024)
 
 ### Added