diff --git a/CHANGELOG.md b/CHANGELOG.md
index bb1ce0e..9c7df8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,47 @@
 
 ## Unreleased
 
+## 2.0.0
+
+This release contains relatively many code changes. Please read our [upgrade guide](./UPGRADING.md) before upgrading.
+
+- Remove search_path from where clause of SQL in adapter [#284](https://github.com/cookpad/dmemo/pull/284)
+- Add log for batch [#285](https://github.com/cookpad/dmemo/pull/285)
+- Improve view render peformance about raw_dataset in table memo page [#286](https://github.com/cookpad/dmemo/pull/286)
+- Replace circleci with GitHub Actions [#287](https://github.com/cookpad/dmemo/pull/287) [#288](https://github.com/cookpad/dmemo/pull/288)
+- Show column name when editing column memo [#291](https://github.com/cookpad/dmemo/pull/291)
+- bundle update bootsnap https://github.com/cookpad/dmemo/commit/3f25f0e1b87266a8988f9af12298ccde3be2f596
+- Bump nokogiri from 1.11.7 to 1.13.4 [#299](https://github.com/cookpad/dmemo/pull/299)
+- Bump puma from 5.3.2 to 5.6.4 [#298](https://github.com/cookpad/dmemo/pull/298)
+- Bump commonmarker from 0.22.0 to 0.23.4 [#297](https://github.com/cookpad/dmemo/pull/297)
+- Use simpacker instead of Sprockets [#300](https://github.com/cookpad/dmemo/pull/300)
+- Remove coveralls [#302](https://github.com/cookpad/dmemo/pull/302)
+- Update badge URL [357bb92](https://github.com/cookpad/dmemo/commit/357bb92dc0db2b934883c331dd55805ce0c661fb)
+- Use ECR Public to avoid rate limits on Docker Hub [ed25ba5](https://github.com/cookpad/dmemo/commit/ed25ba528be62990d6e498b15d50111e3b31d543)
+- Allow DB password to be set independently [#315](https://github.com/cookpad/dmemo/pull/315) [#316](https://github.com/cookpad/dmemo/pull/316)
+- Fix title element in keyword#show [#326](https://github.com/cookpad/dmemo/pull/326)
+- Let rubocop search .ruby-version file [#328](https://github.com/cookpad/dmemo/pull/328)
+- Remove references to old Docker repository [#331](https://github.com/cookpad/dmemo/pull/331)
+- DataSource does not have db_name, but dbname [#329](https://github.com/cookpad/dmemo/pull/329)
+- bin: Migrate database for testing, too [#327](https://github.com/cookpad/dmemo/pull/327)
+- rubocop: Inherit rules from cookpad/styleguide and auto-correct all [#330](https://github.com/cookpad/dmemo/pull/330)
+- Roll gems [#333](https://github.com/cookpad/dmemo/pull/333)
+- Roll NPM packages and Node.js [#332](https://github.com/cookpad/dmemo/pull/332) [#335](https://github.com/cookpad/dmemo/pull/335)
+- Add Cookpad to licensers [#334](https://github.com/cookpad/dmemo/pull/334)
+- ci: Avoid running tests twice for pull requests [#336](https://github.com/cookpad/dmemo/pull/336)
+- Bump follow-redirects from 1.15.5 to 1.15.6 [#337](https://github.com/cookpad/dmemo/pull/337)
+- Bump webpack-dev-middleware from 7.0.0 to 7.1.1 [#338](https://github.com/cookpad/dmemo/pull/338)
+- Bump express from 4.18.2 to 4.19.2 [#340](https://github.com/cookpad/dmemo/pull/340)
+- **BREAKING** Remove raw datasets and masked data [#341](https://github.com/cookpad/dmemo/pull/341)
+- Use pg gem directly on Redshift adapter [#342](https://github.com/cookpad/dmemo/pull/342)
+- Update to Rails 7.0 [#339](https://github.com/cookpad/dmemo/pull/339)
+- Upgrade Ruby to 3.1 and roll gems [#343](https://github.com/cookpad/dmemo/pull/343)
+- Fix margin of search box when not logined [#344](https://github.com/cookpad/dmemo/pull/344)
+- Fix finished log of ImportDataSourceDefinitions batch [#345](https://github.com/cookpad/dmemo/pull/345)
+- Fix log of SynchronizeDefinitions [#346](https://github.com/cookpad/dmemo/pull/346)
+- Deprecate SynchronizeDataSources [#347](https://github.com/cookpad/dmemo/pull/347)
+- Lint by RuboCop [#348](https://github.com/cookpad/dmemo/pull/348)
+
 ## 1.0.0
 - Modify listed item UI [#263](https://github.com/hogelog/dmemo/pull/263)
 - Improve visibility in browser tab [#262](https://github.com/hogelog/dmemo/pull/262)
diff --git a/UPGRADING.md b/UPGRADING.md
new file mode 100644
index 0000000..1e17a14
--- /dev/null
+++ b/UPGRADING.md
@@ -0,0 +1,9 @@
+# Upgrade Guide
+
+## Upgrade to v2
+
+Dmemo v2 stopped showing some rows of a table, and dropped related tables (`table_memo_raw_dataset*` and `masked_data`). If you want to preserve the data of the tables, please take a backup of them before upgrading.
+
+The tables are deleted if you run `bin/docker_db_apply.sh` with an environment variable `RIDGEPOLE_DROP_TABLE=1`. You should drop the tables after deploying dmemo v2.
+
+Dmemo v2 also deprecates SynchronizeDataSources job. Please switch to ImportDataSourceDefinitions or SynchronizeDefinitions.
diff --git a/config/application.rb b/config/application.rb
index 4eb5c56..fc74fbb 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -11,7 +11,7 @@
 Bundler.require(*Rails.groups)
 
 module Dmemo
-  VERSION = "1.0.0"
+  VERSION = "2.0.0"
 
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.