mvn package dependecies not downloading properly

[gokul-bhoomi]

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[ERROR] Failed to execute goal on project soot-infoflow: Could not resolve dependencies for project de.tud.sse:soot-infoflow:jar:2.7.3-SNAPSHOT: The following artifacts could not be resolved: de.upb.cs.swt:heros:jar:1.2.0-SNAPSHOT, ca.mcgill.sable:soot:jar:4.1.0-SNAPSHOT: Failure to find de.upb.cs.swt:heros:jar:1.2.0-SNAPSHOT in https://oss.sonatype.org/content/repositories/snapshots was cached in the local repository, resolution will not be reattempted until the update interval of sonatype-snapshot has elapsed or updates are forced -> [Help 1] @StevenArzt