# How to add a 3rd party library dependency?

Add the library dependency to custom.sbt

For example to add a dependency on Scala POI Wrapper for the spreadsheet generation in Excel in the lottery project:
- open lottery/custom.sbt file
- add the below line:
```
libraryDependencies in ThisBuild += "com.norbitltd" %% "spoiwo" % "1.3.2"
```
Inside sbt shell, run command reload
```
[Lottery] $ reload
```