diff --git a/server/version/version.go b/server/version/version.go
index 5be78dcb7..4022fcb13 100644
--- a/server/version/version.go
+++ b/server/version/version.go
@@ -12,7 +12,7 @@ import (
 var Version = "0.23.1"
 
 // DevVersion is the service current development version.
-var DevVersion = "0.23.1"
+var DevVersion = "0.24.0"
 
 func GetCurrentVersion(mode string) string {
 	if mode == "dev" || mode == "demo" {
diff --git a/store/migration/mysql/0.24/00__memo.sql b/store/migration/mysql/0.24/00__memo.sql
new file mode 100644
index 000000000..fc8a22e89
--- /dev/null
+++ b/store/migration/mysql/0.24/00__memo.sql
@@ -0,0 +1,11 @@
+-- Drop deprecated tags column.
+ALTER TABLE `memo` DROP COLUMN `tags`;
+
+-- Add pinned column.
+ALTER TABLE `memo` ADD COLUMN `pinned` BOOLEAN NOT NULL DEFAULT FALSE;
+
+-- Update pinned column from memo_organizer.
+UPDATE `memo`
+SET `pinned` = TRUE
+FROM `memo_organizer`
+WHERE `memo`.`id` = `memo_organizer`.`memo_id` AND `memo_organizer`.`pinned` = 1;
\ No newline at end of file
diff --git a/store/migration/mysql/LATEST.sql b/store/migration/mysql/LATEST.sql
index 3a3fb7d00..989b73a0f 100644
--- a/store/migration/mysql/LATEST.sql
+++ b/store/migration/mysql/LATEST.sql
@@ -44,7 +44,7 @@ CREATE TABLE `memo` (
   `row_status` VARCHAR(256) NOT NULL DEFAULT 'NORMAL',
   `content` TEXT NOT NULL,
   `visibility` VARCHAR(256) NOT NULL DEFAULT 'PRIVATE',
-  `tags` JSON NOT NULL,
+  `pinned` BOOLEAN NOT NULL DEFAULT FALSE,
   `payload` JSON NOT NULL
 );
 
diff --git a/store/migration/postgres/0.24/00__memo.sql b/store/migration/postgres/0.24/00__memo.sql
new file mode 100644
index 000000000..506319ab0
--- /dev/null
+++ b/store/migration/postgres/0.24/00__memo.sql
@@ -0,0 +1,11 @@
+-- Drop deprecated tags column.
+ALTER TABLE memo DROP COLUMN tags;
+
+-- Add pinned column.
+ALTER TABLE memo ADD COLUMN pinned BOOLEAN NOT NULL DEFAULT FALSE;
+
+-- Update pinned column from memo_organizer.
+UPDATE memo
+SET pinned = TRUE
+FROM memo_organizer
+WHERE memo.id = memo_organizer.memo_id AND memo_organizer.pinned = 1;
\ No newline at end of file
diff --git a/store/migration/postgres/LATEST.sql b/store/migration/postgres/LATEST.sql
index 957eaced5..0eca0d740 100644
--- a/store/migration/postgres/LATEST.sql
+++ b/store/migration/postgres/LATEST.sql
@@ -44,7 +44,7 @@ CREATE TABLE memo (
   row_status TEXT NOT NULL DEFAULT 'NORMAL',
   content TEXT NOT NULL,
   visibility TEXT NOT NULL DEFAULT 'PRIVATE',
-  tags JSONB NOT NULL DEFAULT '[]',
+  pinned BOOLEAN NOT NULL DEFAULT FALSE,
   payload JSONB NOT NULL DEFAULT '{}'
 );
 
diff --git a/store/migration/sqlite/0.24/00__memo.sql b/store/migration/sqlite/0.24/00__memo.sql
index 9351e4cd3..ca8e06386 100644
--- a/store/migration/sqlite/0.24/00__memo.sql
+++ b/store/migration/sqlite/0.24/00__memo.sql
@@ -12,4 +12,5 @@ ALTER TABLE memo ADD COLUMN pinned INTEGER NOT NULL CHECK (pinned IN (0, 1)) DEF
 -- Update pinned column from memo_organizer.
 UPDATE memo
 SET pinned = 1
-WHERE EXISTS (SELECT 1 FROM memo_organizer WHERE memo_organizer.memo_id = memo.id AND memo_organizer.pinned = 1);
+FROM memo_organizer
+WHERE memo.id = memo_organizer.memo_id AND memo_organizer.pinned = 1;
\ No newline at end of file