I've found a way to install SNAPSHOTs with Maven.
All you need to do is just to add a snapshot repository to your POM root
like this:
<repositories>
<repository>
<id>jooq-snapshots</id>
<url>https://oss.sonatype.org/content/repositories/snapshots</url>
<snapshots>
<updatePolicy>always</updatePolicy>
</snapshots>
<releases>
<updatePolicy>always</updatePolicy>
</releases>
</repository>
</repositories>
And then you can write your dependencies as usual in the POM
<dependency>
<groupId>org.jooq</groupId>
<artifactId>jooq</artifactId>
<version>1.5.8-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.jooq</groupId>
<artifactId>jooq-codegen</artifactId>
<version>1.5.8-SNAPSHOT</version>
</dependency>