http://bugzilla.slf4j.org/show_bug.cgi?id=319 Priority: P5 Bug ID: 319 Assignee: slf4j-dev@qos.ch Summary: Missing version in pom files Severity: blocker Classification: Unclassified OS: other Reporter: bdupraz.ext@deltadore.com Hardware: PC Status: NEW Version: 1.7.x Component: Implementations Product: SLF4J When using Ivy to resolve dependency in my project with this line: <dependency org="org.slf4j" name="slf4j-log4j12" rev="1.7.5" /> slf4j-api-1.7.5.jar and log4j-1.2.17.jar aren't resolve. I've open the ivy-1.7.5.xml file in Ivy cache, I've got this : <dependency org="org.slf4j" name="working@xxxxxxxx" rev="1.7.5" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/> <dependency org="log4j" name="log4j" rev="working@xxxxxxxx" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/> At working@xxxxxxxx, the xxxxxxxx are my machine host name. When I edit the file with dependency found on Maven central like this: <dependency org="org.slf4j" name="slf4j-api" rev="1.7.5" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/> <dependency org="log4j" name="log4j" rev="1.2.17" force="true" conf="compile->compile(*),master(*);runtime->runtime(*)"/> It works as soon as I trigger a new resolve with Ivy. So I looked in the pom file on Maven Central and I found that the required version attribute in dependencies are missing. Here the extract of the pom file currently on Maven Central: <dependencies> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> </dependency> </dependencies> and here is what it should be: <dependencies> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.5</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> </dependencies> This problem appears on every versions of slf4j-log4j12 -- You are receiving this mail because: You are the assignee for the bug.