unresolved dependency: com.github.katjahahn#portex;1.0.beta1.1: not found

[Saturnix]

Running into this error when I try sbt assembly.

  [info] Resolving com.github.katjahahn#portex;1.0.beta1.1 ...
[warn]  module not found: com.github.katjahahn#portex;1.0.beta1.1
[warn] ==== local: tried
[warn]   C:\Users\User\.ivy2\local\com.github.katjahahn\portex\1.0.beta1.1\ivys\ivy.xml
[warn] ==== local-preloaded-ivy: tried
[warn]   file:/C:/Users/User/.sbt/preloaded/com.github.katjahahn/portex/1.0.beta1.1/ivys/ivy.xml
[warn] ==== local-preloaded: tried
[warn]   file:/C:/Users/User/.sbt/preloaded/com/github/katjahahn/portex/1.0.beta1.1/portex-1.0.beta1.1.pom
[warn] ==== public: tried
[warn]   http://repo1.maven.org/maven2/com/github/katjahahn/portex/1.0.beta1.1/portex-1.0.beta1.1.pom
[warn] ==== Maven2 Local: tried
[warn]   file:/C:/Users/User/.m2/repository/com/github/katjahahn/portex/1.0.beta1.1/portex-1.0.beta1.1.pom
[info] Resolving org.scala-lang#scala-compiler;2.10.4 ...
  [info] Resolving org.scala-lang#scala-reflect;2.10.4 ...
  [info] Resolving org.scala-lang#jline;2.10.4 ...
  [info] Resolving org.fusesource.jansi#jansi;1.4 ...
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: com.github.katjahahn#portex;1.0.beta1.1: not found
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[trace] Stack trace suppressed: run last *:update for the full output.
[error] (*:update) sbt.ResolveException: unresolved dependency: com.github.katjahahn#portex;1.0.beta1.1: not found

Really have no idea on how to import this missing dependency.