diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca697260..2a201274 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.21.0](https://github.com/OctopusDeploy/cli/compare/v2.20.1...v2.21.0) (2026-01-13)
+
+
+### Features
+
+* service message flag support ([#574](https://github.com/OctopusDeploy/cli/issues/574)) ([e1ccf99](https://github.com/OctopusDeploy/cli/commit/e1ccf99c7fcfc0f02b9c583e9e3545e66956bc70))
+
 ## [2.20.1](https://github.com/OctopusDeploy/cli/compare/v2.20.0...v2.20.1) (2025-12-04)
 
 
diff --git a/scripts/install.sh b/scripts/install.sh
index aa522622..b67f65a3 100644
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -33,7 +33,7 @@ fi
 
 log "Selecting version..."
 
-version=${VERSION:-v2.20.1}
+version=${VERSION:-v2.21.0}
 
 if [ ! $version ]; then
     log "${YELLOW}"
diff --git a/version.txt b/version.txt
index 4e2200b9..db65e216 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-2.20.1
+2.21.0