diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc9390f49..d66568271 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,25 @@ and Yorkie adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
 
 ## [Unreleased]
 
+## [0.5.6] - 2024-11-22
+
+### Added
+
+- Add migration script to detach documents from deactivated clients by @raararaara in https://github.com/yorkie-team/yorkie/pull/1062
+
+### Changed
+
+- Upate garbage collection algorithm design by @JOOHOJANG in https://github.com/yorkie-team/yorkie/pull/1061
+- Convert `presence change` from string to binary by @chacha912 in https://github.com/yorkie-team/yorkie/pull/1069
+
+### Fixed
+
+- Add minLamport for proper GC of deactivated clients by @JOOHOJANG in https://github.com/yorkie-team/yorkie/pull/1060
+- Optimize document detachment in Cluster Server by @raararaara in https://github.com/yorkie-team/yorkie/pull/1055
+- Fix version vector cleanup during client deactivation by @raararaara in https://github.com/yorkie-team/yorkie/pull/1068
+- Correct ReverseLowerBound behavior in MemDB by setting unique index by @chacha912 in https://github.com/yorkie-team/yorkie/pull/1074
+- Update presence_change migration for JSON to Protobuf conversion by @chacha912 in https://github.com/yorkie-team/yorkie/pull/1075
+
 ## [0.5.5] - 2024-11-07
 
 ### Added
diff --git a/Makefile b/Makefile
index 5ab6f4ca3..8045c4c9b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-YORKIE_VERSION := 0.5.5
+YORKIE_VERSION := 0.5.6
 
 GO_PROJECT = github.com/yorkie-team/yorkie
 
diff --git a/api/docs/yorkie.base.yaml b/api/docs/yorkie.base.yaml
index 1e598d3d0..c38c4bff4 100644
--- a/api/docs/yorkie.base.yaml
+++ b/api/docs/yorkie.base.yaml
@@ -2,7 +2,7 @@ openapi: 3.1.0
 info:
   title: Yorkie
   description: "Yorkie is an open source document store for building collaborative editing applications."
-  version: v0.5.5
+  version: v0.5.6
 servers:
   - url: https://api.yorkie.dev
     description: Production server
diff --git a/api/docs/yorkie/v1/admin.openapi.yaml b/api/docs/yorkie/v1/admin.openapi.yaml
index 07f532f33..bf379e7b1 100644
--- a/api/docs/yorkie/v1/admin.openapi.yaml
+++ b/api/docs/yorkie/v1/admin.openapi.yaml
@@ -4,7 +4,7 @@ info:
     Yorkie is an open source document store for building collaborative
     editing applications.
   title: Yorkie
-  version: v0.5.5
+  version: v0.5.6
 servers:
   - description: Production server
     url: https://api.yorkie.dev
diff --git a/api/docs/yorkie/v1/cluster.openapi.yaml b/api/docs/yorkie/v1/cluster.openapi.yaml
index 7f37b47dc..9fbc9b4a5 100644
--- a/api/docs/yorkie/v1/cluster.openapi.yaml
+++ b/api/docs/yorkie/v1/cluster.openapi.yaml
@@ -4,7 +4,7 @@ info:
     Yorkie is an open source document store for building collaborative
     editing applications.
   title: Yorkie
-  version: v0.5.5
+  version: v0.5.6
 servers:
   - description: Production server
     url: https://api.yorkie.dev
diff --git a/api/docs/yorkie/v1/resources.openapi.yaml b/api/docs/yorkie/v1/resources.openapi.yaml
index 5aa88ab78..ce4b5f903 100644
--- a/api/docs/yorkie/v1/resources.openapi.yaml
+++ b/api/docs/yorkie/v1/resources.openapi.yaml
@@ -4,7 +4,7 @@ info:
     Yorkie is an open source document store for building collaborative
     editing applications.
   title: Yorkie
-  version: v0.5.5
+  version: v0.5.6
 servers:
   - description: Production server
     url: https://api.yorkie.dev
diff --git a/api/docs/yorkie/v1/yorkie.openapi.yaml b/api/docs/yorkie/v1/yorkie.openapi.yaml
index a898fb893..10cb1b697 100644
--- a/api/docs/yorkie/v1/yorkie.openapi.yaml
+++ b/api/docs/yorkie/v1/yorkie.openapi.yaml
@@ -4,7 +4,7 @@ info:
     Yorkie is an open source document store for building collaborative
     editing applications.
   title: Yorkie
-  version: v0.5.5
+  version: v0.5.6
 servers:
   - description: Production server
     url: https://api.yorkie.dev
diff --git a/build/charts/yorkie-cluster/Chart.yaml b/build/charts/yorkie-cluster/Chart.yaml
index 4f0c8f553..496e4b8c3 100644
--- a/build/charts/yorkie-cluster/Chart.yaml
+++ b/build/charts/yorkie-cluster/Chart.yaml
@@ -11,8 +11,8 @@ maintainers:
 
 sources:
   - https://github.com/yorkie-team/yorkie
-version: 0.5.5
-appVersion: "0.5.5"
+version: 0.5.6
+appVersion: "0.5.6"
 kubeVersion: ">=1.23.0-0"
 
 dependencies: