diff --git a/CHANGELOG.md b/CHANGELOG.md
index 360bf7f..a7865da 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.1] - 2026-06-23
+
+### Fixed
+- Per-file tables in PR comments and the job step summary rendered with a blank line after the header-separator row, which broke the Markdown table layout on GitHub. The coverage and quality tables now render correctly. (#13, fixes #11)
+
+### Added
+- Dev Container configuration in `.devcontainer/` for a one-command, reproducible Python development environment. (#12)
+
+### Documentation
+- Quickstart section, an honest comparison against alternative tools, and expanded community-standards files (Code of Conduct, Security Policy). (#8)
+
 ## [2.1.0] - 2026-04-29
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
index 01ba4e4..cb7da2e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "diff-cover-action"
-version = "1.0.0"
+version = "2.1.1"
 description = "GitHub Action wrapping diff-cover with native PR comments, annotations, and badges"
 requires-python = ">=3.12"