Why isn't IntelliJ IDEA resolving maven properties?

I'm running IntelliJ IDEA 2019.3 community edition on windows 10 64-bit. It correctly imported and resolved few dependencies like spring-boot, MySQL connector Java, etc.,. However, when I try to add a new dependency for hibernate-core and import changes, it says "Cannot resolve dependency hibernate core".

The "Pom.xml":

 <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.2.5.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.resondate</groupId>
	<artifactId>resondate</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>resondate</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-security</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
			<exclusions>
				<exclusion>
					<groupId>org.junit.vintage</groupId>
					<artifactId>junit-vintage-engine</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.springframework.security</groupId>
			<artifactId>spring-security-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.10</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.10.0</version>
		</dependency>
		<dependency>
			<groupId>org.liquibase</groupId>
			<artifactId>liquibase-core</artifactId>
			<version>3.8.4</version>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>8.0.14</version>
		</dependency>
		<dependency>
			<groupId>org.hibernate</groupId>
			<artifactId>hibernate-core</artifactId>
			<version>6.0.0.Alpha4</version>
			<type>pom</type>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<plugin>
				<groupId>org.liquibase</groupId>
				<artifactId>liquibase-maven-plugin</artifactId>
				<configuration>
					<propertyFile>src/main/resources/liquibase.properties</propertyFile>
				</configuration>
				<executions>
					<execution>
						<phase>process-resources</phase>
						<goals>
							<goal>update</goal>
						</goals>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>

</project>

The error message that comes up is as follows:

> Cannot resolve org.hibernate:hibernate-core:6.0.0.Alpha4

It does this for all versions of hibernate-core. Please provide insights as to why this is happening. Thank you.

1. Don't use Hibernate's Alpha version.
2. If you cannot resist, instead of overriding the whole dependency block, just specify the version you want. Thanks to Spring Boot's parent pom this will work flawlessly. Example:

Instead of:

     <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>6.0.0.Alpha4</version>
        <type>pom</type>
    </dependency>

Do:

<properties>
    <hibernate.version>5.4.13.Final</hibernate.version>
</properties>

Same for all other dependencies, like mysql etc.

3. The version override to 6.0.0.Alpha won't work for Hibernate, as the actual groupId has changed, to org.hibernate.orm . Hence, I wouldn't do it

.