Excerpt from the current manifest file of jcl-over-slf4j-1.7.5.jar: ... Export-Package: org.apache.commons.logging;version=1.1.1, org.apache.commons.logging.impl;version=1.1.1 I have a third party lib that imports the package "org.apache.commons.logging" in version=1.1.3 I cannot use slf4j in this case. Extracted from the release notes of JCL 1.1.3, I think that the release comprises no API changes. Can you make jcl-over-slf4j compatible to JCL 1.1.3?