diff --git a/build.ps1 b/build.ps1
index 29b79044ed3bda9aa1e760f8b6b1e6526ab56d25..161b6cf4afacf7986d57f649a49ce9c66dfb74b6 100755
--- a/build.ps1
+++ b/build.ps1
@@ -50,5 +50,5 @@ Remove-Item -path META-INF -recurse
 
 mv META-INF.bak META-INF
 
-jar cfm "$jarfile" META-INF/MANIFEST.MF projlab/*.class projlab/commands/*.class
+jar cfm "$jarfile" META-INF/MANIFEST.MF $(Get-ChildItem . -Exclude *.java,META-INF -Name)
 echo "Successfully built $jarfile"