Problem with 4.8.181: module not found: io.github.classgraph

I'm using classgraph in a Java project with JMS. When updating to classgraph 4.8.181, I am no longer able to compile my application, javac quits with this error message:

src/main/java/module-info.java:27:23
java: module not found: io.github.classgraph

My module-info simply has require io.github.classgraph, classgraph is a regular dependency in the projects Maven pom.xml (i.e. with compile scope).

Downgrading to 4.8.180 fixes the problem.