diff --git a/cmd/prb/CHANGELOG.md b/cmd/prb/CHANGELOG.md
index cf2e06e8f..ac8eb3f96 100644
--- a/cmd/prb/CHANGELOG.md
+++ b/cmd/prb/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to the `prb` CLI will be documented in this file.
 
 ## Unreleased
 
+## [0.188.0] - 2026-05-22
+
+### Added
+
+- Add `prb risk-assessment` command group with nested `scope`, `node`, `process`, `threat`, and `scenario` subcommands for managing the hierarchical risk assessment system, including scenario-to-risk and scenario-to-threat link/unlink and Mermaid chart retrieval
+
 ## [0.187.0] - 2026-05-15
 
 ### Changed
diff --git a/cmd/prb/VERSION b/cmd/prb/VERSION
index 74e05031e..a27c87628 100644
--- a/cmd/prb/VERSION
+++ b/cmd/prb/VERSION
@@ -1 +1 @@
-0.187.0
+0.188.0