diff --git a/README.md b/README.md
index d11b978..885053c 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,9 @@ Empty state is defined as:
  - empty tables, sequences restarted for `resetDatabase()` 
  - empty database schema for `dropAllObjects()`
 
-Warning: H2Util requires JPA, Spring and H2 dependencies which are defined as optional in library: you have to provide them on your own.
+Warnings:
+ - H2Util requires JPA, Spring and H2 dependencies which are defined as optional in library: you have to provide them on your own.
+ - Hibernate can cache sequence values in advance. You might want to disable that by setting [`hibernate.id.optimizer.pooled.preferred`](https://docs.jboss.org/hibernate/orm/6.5/userguide/html_single/Hibernate_User_Guide.html#settings-mapping) to `NONE` (for example by adding `spring.jpa.properties.hibernate.id.optimizer.pooled.preferred=NONE` spring property)
 
 ### TestClock
 TestClock is an implementation of the abstract class `Clock`, and provides features useful for testing. If not specified it is initialized with a fixed Instant in the past. Its time is fixed, this clock will not run. Therefore, it also provides features to manipulate its time.
diff --git a/build.gradle b/build.gradle
index e7529ae..eca4bd2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,8 +10,8 @@ allprojects {
 	group "de.cronn"
 	version = System.env.ARTIFACT_VERSION ?: "SNAPSHOT"
 
-	sourceCompatibility = JavaVersion.VERSION_1_8
-	targetCompatibility = JavaVersion.VERSION_1_8
+	sourceCompatibility = JavaVersion.VERSION_17
+	targetCompatibility = JavaVersion.VERSION_17
 
 	compileJava.options.encoding = 'UTF-8'
 
@@ -42,7 +42,7 @@ test {
 
 dependencyManagement {
 	imports {
-		mavenBom "org.springframework.boot:spring-boot-dependencies:2.6.14"
+		mavenBom "org.springframework.boot:spring-boot-dependencies:3.2.6"
 	}
 	generatedPomCustomization {
 		enabled = false
diff --git a/spring-boot-tests/build.gradle b/spring-boot-tests/build.gradle
index 9d7994f..ea3d75c 100644
--- a/spring-boot-tests/build.gradle
+++ b/spring-boot-tests/build.gradle
@@ -1,5 +1,5 @@
 dependencies {
-	implementation platform("org.springframework.boot:spring-boot-dependencies:2.6.14")
+	implementation platform("org.springframework.boot:spring-boot-dependencies:3.2.6")
 	testImplementation "org.springframework.boot:spring-boot-starter-test"
 	testImplementation project(":")
 }
diff --git a/spring-boot-tests/h2/build.gradle b/spring-boot-tests/h2/build.gradle
index c31d5f7..ec1e23f 100644
--- a/spring-boot-tests/h2/build.gradle
+++ b/spring-boot-tests/h2/build.gradle
@@ -3,7 +3,7 @@ plugins {
 }
 
 dependencies {
-	api platform("org.springframework.boot:spring-boot-dependencies:2.6.14")
+	api platform("org.springframework.boot:spring-boot-dependencies:3.2.6")
 	api "org.springframework.boot:spring-boot-starter-test"
 	api "org.springframework.boot:spring-boot-starter-data-jpa"
 	implementation project(":")
diff --git a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/H2UtilTest.java b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/H2UtilTest.java
index 12a25b0..d13c79d 100644
--- a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/H2UtilTest.java
+++ b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/H2UtilTest.java
@@ -2,8 +2,6 @@
 
 import java.util.regex.Pattern;
 
-import javax.persistence.EntityManager;
-
 import org.assertj.core.api.SoftAssertions;
 import org.assertj.core.api.junit.jupiter.InjectSoftAssertions;
 import org.assertj.core.api.junit.jupiter.SoftAssertionsExtension;
@@ -24,6 +22,7 @@
 import de.cronn.testutils.h2.app.SecondSchemaEntity;
 import de.cronn.testutils.h2.app.SequenceUsingEntity;
 import de.cronn.testutils.h2.app.TransactionUtil;
+import jakarta.persistence.EntityManager;
 
 @ExtendWith(SoftAssertionsExtension.class)
 @TestMethodOrder(MethodOrderer.MethodName.class)
diff --git a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/EntityWithIdentityId.java b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/EntityWithIdentityId.java
index 070e606..e67b994 100644
--- a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/EntityWithIdentityId.java
+++ b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/EntityWithIdentityId.java
@@ -1,9 +1,9 @@
 package de.cronn.testutils.h2.app;
 
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
 
 @Entity
 public class EntityWithIdentityId {
diff --git a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleEntity.java b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleEntity.java
index add0743..f9f938e 100644
--- a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleEntity.java
+++ b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleEntity.java
@@ -1,8 +1,8 @@
 package de.cronn.testutils.h2.app;
 
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.Id;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
 
 @Entity
 public class SampleEntity {
diff --git a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleTableGeneratedEntity.java b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleTableGeneratedEntity.java
index e27a7b0..a1657ef 100644
--- a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleTableGeneratedEntity.java
+++ b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SampleTableGeneratedEntity.java
@@ -1,10 +1,10 @@
 package de.cronn.testutils.h2.app;
 
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
-import javax.persistence.TableGenerator;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.TableGenerator;
 
 @Entity
 public class SampleTableGeneratedEntity {
diff --git a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SecondSchemaEntity.java b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SecondSchemaEntity.java
index 6bac876..9176d12 100644
--- a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SecondSchemaEntity.java
+++ b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SecondSchemaEntity.java
@@ -1,11 +1,11 @@
 package de.cronn.testutils.h2.app;
 
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
-import javax.persistence.Table;
-import javax.persistence.TableGenerator;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import jakarta.persistence.TableGenerator;
 
 @Table(schema = "second_schema")
 @Entity
diff --git a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SequenceUsingEntity.java b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SequenceUsingEntity.java
index 0e0fadd..8ac8716 100644
--- a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SequenceUsingEntity.java
+++ b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/SequenceUsingEntity.java
@@ -1,10 +1,10 @@
 package de.cronn.testutils.h2.app;
 
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
-import javax.persistence.SequenceGenerator;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.SequenceGenerator;
 
 @Entity
 public class SequenceUsingEntity {
diff --git a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/TransactionUtil.java b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/TransactionUtil.java
index b79f89f..3c284cb 100644
--- a/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/TransactionUtil.java
+++ b/spring-boot-tests/h2/src/main/java/de/cronn/testutils/h2/app/TransactionUtil.java
@@ -1,6 +1,6 @@
 package de.cronn.testutils.h2.app;
 
-import javax.transaction.Transactional;
+import jakarta.transaction.Transactional;
 
 public class TransactionUtil {
 
diff --git a/spring-boot-tests/h2/src/main/resources/application.properties b/spring-boot-tests/h2/src/main/resources/application.properties
index 5c64d01..f7cf243 100644
--- a/spring-boot-tests/h2/src/main/resources/application.properties
+++ b/spring-boot-tests/h2/src/main/resources/application.properties
@@ -1 +1,2 @@
 spring.datasource.url=jdbc:h2:mem:testdb;INIT=CREATE SCHEMA IF NOT EXISTS SECOND_SCHEMA
+spring.jpa.properties.hibernate.id.optimizer.pooled.preferred=NONE
diff --git a/spring-boot-tests/h2/tests-h2-1.4.x/build.gradle b/spring-boot-tests/h2/tests-h2-1.4.x/build.gradle
index e73a1ba..dc6cfa6 100644
--- a/spring-boot-tests/h2/tests-h2-1.4.x/build.gradle
+++ b/spring-boot-tests/h2/tests-h2-1.4.x/build.gradle
@@ -1,4 +1,8 @@
 dependencies {
 	implementation project(":spring-boot-tests:h2")
-	runtimeOnly "com.h2database:h2:1.4.200"
+	runtimeOnly("com.h2database:h2") {
+		version {
+			strictly "1.4.200"
+		}
+	}
 }
diff --git a/spring-boot-tests/h2/tests-h2-2.0.x/build.gradle b/spring-boot-tests/h2/tests-h2-2.0.x/build.gradle
index e7cf637..55f4da4 100644
--- a/spring-boot-tests/h2/tests-h2-2.0.x/build.gradle
+++ b/spring-boot-tests/h2/tests-h2-2.0.x/build.gradle
@@ -1,4 +1,8 @@
 dependencies {
 	implementation project(":spring-boot-tests:h2")
-	runtimeOnly "com.h2database:h2:2.0.206"
+	runtimeOnly("com.h2database:h2") {
+		version {
+			strictly "2.0.206"
+		}
+	}
 }
diff --git a/spring-boot-tests/h2/tests-h2-2.1.x/build.gradle b/spring-boot-tests/h2/tests-h2-2.1.x/build.gradle
index bcbec6f..807a4bc 100644
--- a/spring-boot-tests/h2/tests-h2-2.1.x/build.gradle
+++ b/spring-boot-tests/h2/tests-h2-2.1.x/build.gradle
@@ -1,4 +1,8 @@
 dependencies {
 	implementation project(":spring-boot-tests:h2")
-	runtimeOnly "com.h2database:h2:2.1.214"
+	runtimeOnly("com.h2database:h2") {
+		version {
+			strictly "2.1.214"
+		}
+	}
 }
diff --git a/spring-boot-tests/h2/tests-h2-2.2.x/build.gradle b/spring-boot-tests/h2/tests-h2-2.2.x/build.gradle
index 139c04e..6416869 100644
--- a/spring-boot-tests/h2/tests-h2-2.2.x/build.gradle
+++ b/spring-boot-tests/h2/tests-h2-2.2.x/build.gradle
@@ -1,4 +1,8 @@
 dependencies {
 	implementation project(":spring-boot-tests:h2")
-	runtimeOnly "com.h2database:h2:2.2.224"
+	runtimeOnly("com.h2database:h2") {
+		version {
+			strictly "2.2.224"
+		}
+	}
 }
diff --git a/src/main/java/de/cronn/testutils/h2/H2Util.java b/src/main/java/de/cronn/testutils/h2/H2Util.java
index b9d2206..d942667 100644
--- a/src/main/java/de/cronn/testutils/h2/H2Util.java
+++ b/src/main/java/de/cronn/testutils/h2/H2Util.java
@@ -18,9 +18,6 @@
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
-import javax.persistence.EntityManager;
-import javax.persistence.TableGenerator;
-import javax.persistence.metamodel.EntityType;
 import javax.sql.DataSource;
 
 import org.slf4j.Logger;
@@ -28,6 +25,10 @@
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.util.Assert;
 
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.TableGenerator;
+import jakarta.persistence.metamodel.EntityType;
+
 public class H2Util {
 
 	private static final Logger log = LoggerFactory.getLogger(H2Util.class);