diff --git a/batch-boot-jpa-sample/src/main/resources/db/changelog/db.changelog-master.yaml b/batch-boot-jpa-sample/src/main/resources/db/changelog/db.changelog-master.yaml
index 8d0db6788..79591ef1f 100644
--- a/batch-boot-jpa-sample/src/main/resources/db/changelog/db.changelog-master.yaml
+++ b/batch-boot-jpa-sample/src/main/resources/db/changelog/db.changelog-master.yaml
@@ -1,29 +1,29 @@
-databaseChangeLog:
-  - includeAll:
-      path: migration/
-      errorIfMissingOrEmpty: true
-      relativeToChangelogFile: true
-
-  - changeSet:
-      dbms: postgresql
-      id: create-spring-batch-metadata
-      author: raja
-      changes:
-        - sqlFile:
-            encoding: UTF-8
-            path: classpath:/org/springframework/batch/core/schema-postgresql.sql
-            relativeToChangelogFile: false
-            splitStatements: true
-            stripComments: true
-
-  - changeSet:
-      dbms: h2
-      id: create-spring-batch-metadata
-      author: raja
-      changes:
-        - sqlFile:
-            encoding: UTF-8
-            path: classpath:/org/springframework/batch/core/schema-h2.sql
-            relativeToChangelogFile: false
-            splitStatements: true
+databaseChangeLog:
+  - includeAll:
+      path: migration/
+      errorIfMissingOrEmpty: true
+      relativeToChangelogFile: true
+
+  - changeSet:
+      dbms: postgresql
+      id: create-spring-batch-metadata
+      author: raja
+      changes:
+        - sqlFile:
+            encoding: UTF-8
+            path: classpath:/org/springframework/batch/core/schema-postgresql.sql
+            relativeToChangelogFile: false
+            splitStatements: true
+            stripComments: true
+
+  - changeSet:
+      dbms: h2
+      id: create-spring-batch-metadata
+      author: raja
+      changes:
+        - sqlFile:
+            encoding: UTF-8
+            path: classpath:/org/springframework/batch/core/schema-h2.sql
+            relativeToChangelogFile: false
+            splitStatements: true
             stripComments: true
\ No newline at end of file
diff --git a/boot-api-archunit-sample/src/main/resources/db/changelog/db.changelog-master.yaml b/boot-api-archunit-sample/src/main/resources/db/changelog/db.changelog-master.yaml
index 8428c6cbf..7e9e64aa4 100644
--- a/boot-api-archunit-sample/src/main/resources/db/changelog/db.changelog-master.yaml
+++ b/boot-api-archunit-sample/src/main/resources/db/changelog/db.changelog-master.yaml
@@ -1,5 +1,5 @@
-databaseChangeLog:
-  - includeAll:
-      path: migration/
-      errorIfMissingOrEmpty: true
+databaseChangeLog:
+  - includeAll:
+      path: migration/
+      errorIfMissingOrEmpty: true
       relativeToChangelogFile: true
\ No newline at end of file
diff --git a/boot-rabbitmq-thymeleaf/src/main/resources/db/changelog/db.changelog-master.yaml b/boot-rabbitmq-thymeleaf/src/main/resources/db/changelog/db.changelog-master.yaml
index 49d6aea57..dfc7af962 100644
--- a/boot-rabbitmq-thymeleaf/src/main/resources/db/changelog/db.changelog-master.yaml
+++ b/boot-rabbitmq-thymeleaf/src/main/resources/db/changelog/db.changelog-master.yaml
@@ -1,3 +1,3 @@
-databaseChangeLog:
-  - include:
+databaseChangeLog:
+  - include:
       file: db/changelog/01-create-tables.xml
\ No newline at end of file
diff --git a/jpa/boot-hibernate2ndlevelcache-sample/src/main/resources/redisson/redisson-dev.yaml b/jpa/boot-hibernate2ndlevelcache-sample/src/main/resources/redisson/redisson-dev.yaml
index 29fdcddcc..ab834b4cb 100644
--- a/jpa/boot-hibernate2ndlevelcache-sample/src/main/resources/redisson/redisson-dev.yaml
+++ b/jpa/boot-hibernate2ndlevelcache-sample/src/main/resources/redisson/redisson-dev.yaml
@@ -1,2 +1,2 @@
-singleServerConfig:
-  address: "redis://localhost:6379"
+singleServerConfig:
+  address: "redis://localhost:6379"
diff --git a/jpa/boot-read-replica-postgresql/src/main/resources/db/changelog/db.changelog-master.yaml b/jpa/boot-read-replica-postgresql/src/main/resources/db/changelog/db.changelog-master.yaml
index 51647818a..bc790d65b 100644
--- a/jpa/boot-read-replica-postgresql/src/main/resources/db/changelog/db.changelog-master.yaml
+++ b/jpa/boot-read-replica-postgresql/src/main/resources/db/changelog/db.changelog-master.yaml
@@ -1,3 +1,3 @@
-databaseChangeLog:
-  - include:
-      file: db/changelog/changelog.sql
+databaseChangeLog:
+  - include:
+      file: db/changelog/changelog.sql
diff --git a/jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/db/changelog/db.changelog-master.yaml b/jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/db/changelog/db.changelog-master.yaml
index 8428c6cbf..7e9e64aa4 100644
--- a/jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/db/changelog/db.changelog-master.yaml
+++ b/jpa/keyset-pagination/boot-data-window-pagination/src/main/resources/db/changelog/db.changelog-master.yaml
@@ -1,5 +1,5 @@
-databaseChangeLog:
-  - includeAll:
-      path: migration/
-      errorIfMissingOrEmpty: true
+databaseChangeLog:
+  - includeAll:
+      path: migration/
+      errorIfMissingOrEmpty: true
       relativeToChangelogFile: true
\ No newline at end of file
diff --git a/jpa/multitenancy/partition/src/main/resources/db/changelog/db.changelog-master.yaml b/jpa/multitenancy/partition/src/main/resources/db/changelog/db.changelog-master.yaml
index ed1dd1875..9baa80cea 100644
--- a/jpa/multitenancy/partition/src/main/resources/db/changelog/db.changelog-master.yaml
+++ b/jpa/multitenancy/partition/src/main/resources/db/changelog/db.changelog-master.yaml
@@ -1,3 +1,3 @@
-databaseChangeLog:
-  - include:
-      file: db/changelog/db.changelog-sql-db.sql
+databaseChangeLog:
+  - include:
+      file: db/changelog/db.changelog-sql-db.sql
diff --git a/r2dbc/boot-r2dbc-sample/src/main/resources/db/changelog/migration/01-create_reactive_posts_table.yaml b/r2dbc/boot-r2dbc-sample/src/main/resources/db/changelog/migration/01-create_reactive_posts_table.yaml
index 715da2404..be1298e4c 100644
--- a/r2dbc/boot-r2dbc-sample/src/main/resources/db/changelog/migration/01-create_reactive_posts_table.yaml
+++ b/r2dbc/boot-r2dbc-sample/src/main/resources/db/changelog/migration/01-create_reactive_posts_table.yaml
@@ -1,50 +1,50 @@
-# https://docs.liquibase.com/concepts/changelogs/yaml-format.html
-databaseChangeLog:
-  - property:
-      name: stringType
-      value: text
-      dbms: postgres
-  - property:
-      name: stringType
-      value: varchar(255)
-      dbms: '!postgres'
-  - changeSet:
-      author: appUser
-      id: createTable-reactive_posts
-      changes:
-        - createSequence:
-            sequenceName: reactive_posts_seq
-            incrementBy: 50
-            startValue: 1
-        - createTable:
-            tableName: reactive_posts
-            columns:
-              - column:
-                  name: id
-                  type: bigint
-                  defaultValueSequenceNext: reactive_posts_seq
-                  constraints:
-                    primaryKey: true
-                    nullable: false
-              - column:
-                  name: title
-                  type: ${stringType}
-                  constraints:
-                    nullable: false
-              - column:
-                  name: content
-                  type: ${stringType}
-                  constraints:
-                    nullable: false
-              - column:
-                  name: created_at
-                  type: timestamptz
-              - column:
-                  name: created_by
-                  type: ${stringType}
-              - column:
-                  name: updated_at
-                  type: timestamptz
-              - column:
-                  name: updated_by
-                  type: ${stringType}
+# https://docs.liquibase.com/concepts/changelogs/yaml-format.html
+databaseChangeLog:
+  - property:
+      name: stringType
+      value: text
+      dbms: postgres
+  - property:
+      name: stringType
+      value: varchar(255)
+      dbms: '!postgres'
+  - changeSet:
+      author: appUser
+      id: createTable-reactive_posts
+      changes:
+        - createSequence:
+            sequenceName: reactive_posts_seq
+            incrementBy: 50
+            startValue: 1
+        - createTable:
+            tableName: reactive_posts
+            columns:
+              - column:
+                  name: id
+                  type: bigint
+                  defaultValueSequenceNext: reactive_posts_seq
+                  constraints:
+                    primaryKey: true
+                    nullable: false
+              - column:
+                  name: title
+                  type: ${stringType}
+                  constraints:
+                    nullable: false
+              - column:
+                  name: content
+                  type: ${stringType}
+                  constraints:
+                    nullable: false
+              - column:
+                  name: created_at
+                  type: timestamptz
+              - column:
+                  name: created_by
+                  type: ${stringType}
+              - column:
+                  name: updated_at
+                  type: timestamptz
+              - column:
+                  name: updated_by
+                  type: ${stringType}