It is listed in the mvnrepository, but the artifact itself is in the Kotlin Exposed repository . You must add a link to the Exposed repository to your POM for Maven in order to find it.
<repositories>
<repository>
<id>exposed</id>
<name>exposed</name>
<url>https://dl.bintray.com/kotlin/exposed</url>
</repository>
</repositories>
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