TestNG version number differs in pom.xml and in execution log

I added TestNG dependency in pom.xml file.

<dependency>
    <groupId>org.testng</groupId>
    <artifactId>testng</artifactId>
    <version>6.14.3</version>
    <scope>compile</scope>
</dependency>

I see following during execution of test:

... ... TestNG 6.8.9beta by Cédric Beust (cedric@beust.com) ...

I just wondering, why isn't version 6.14.3 in use?

My environment: IntelliJ IDEA 2018.1.1 (Community Edition) Build #IC-181.4445.78, built on April 9, 2018 JRE: 1.8.0_152-release-1136-b27 amd64 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Windows 8.1 6.3