WildcardPatternSuite.getBaseDir() - Nullpointer

[Ckrag]

With a testsuite like:

import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.runner.RunWith;
import com.googlecode.junittoolbox.SuiteClasses;
import com.googlecode.junittoolbox.WildcardPatternSuite;

@RunWith(WildcardPatternSuite.class)
@SuiteClasses("**/*Test.class")
public class NormalSuiteTest {}

However this results in the following Null-pointer:
java.lang.NullPointerException: Attempt to invoke virtual method 'java.net.URI java.net.URL.toURI()' on a null object reference
at com.googlecode.junittoolbox.WildcardPatternSuite.getBaseDir(WildcardPatternSuite.java:149)
at com.googlecode.junittoolbox.WildcardPatternSuite.findSuiteClasses(WildcardPatternSuite.java:70)
at com.googlecode.junittoolbox.WildcardPatternSuite.getSuiteClasses(WildcardPatternSuite.java:65)
at com.googlecode.junittoolbox.WildcardPatternSuite.(WildcardPatternSuite.java:194)

My imports are as such:
testCompile 'junit:junit:4.12'
compile 'com.googlecode.junit-toolbox:junit-toolbox:1.10' (for some reason I can't resolve 1.11)

Not entirely sure if I grossly misunderstood something, but I can't find any examples/documentation that does it differently.