diff --git a/CHANGELOG.md b/CHANGELOG.md
index 442e67e..945e79d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.20.0] - 2026-08-09
+
+### Features
+
+- *(healthcheck)* Add two-tier disk prune with critical threshold
+
 ## [0.19.0] - 2026-08-08
 
 ### Features
diff --git a/src/grm/__init__.py b/src/grm/__init__.py
index 4b4ca7a..5f718f2 100644
--- a/src/grm/__init__.py
+++ b/src/grm/__init__.py
@@ -1,3 +1,3 @@
 """Gitea Runner Manager — lean CLI for managing Gitea Actions runners."""
 
-__version__ = "0.19.0"
+__version__ = "0.20.0"