diff --git a/src/main/scala/higherkindness/rules_scala/workers/zinc/compile/ZincRunner.scala b/src/main/scala/higherkindness/rules_scala/workers/zinc/compile/ZincRunner.scala
index 82aafc79..d2798864 100644
--- a/src/main/scala/higherkindness/rules_scala/workers/zinc/compile/ZincRunner.scala
+++ b/src/main/scala/higherkindness/rules_scala/workers/zinc/compile/ZincRunner.scala
@@ -209,8 +209,8 @@ object ZincRunner extends WorkerMain[ZincRunnerWorkerConfig] {
 
     val compileOptions =
       CompileOptions.create
-        .withSources(sources.map(source => PlainVirtualFile(source.toAbsolutePath().normalize())).toArray)
-        .withClasspath((classesOutputDir +: deps.map(_.classpath)).map(path => PlainVirtualFile(path)).toArray)
+        .withSources(sources.view.map(source => PlainVirtualFile(source.toAbsolutePath().normalize())).toArray)
+        .withClasspath((classesOutputDir +: deps.map(_.classpath)).view.map(path => PlainVirtualFile(path)).toArray)
         .withClassesDirectory(classesOutputDir)
         .withJavacOptions(workRequest.javaCompilerOptions)
         .withScalacOptions(
@@ -332,7 +332,7 @@ object ZincRunner extends WorkerMain[ZincRunnerWorkerConfig] {
       deps.filter(Dep.used(deps, resultAnalysis.relations, lookup)).filterNot { dep =>
         val filteredDepFileName = FileUtil.getNameWithoutRulesJvmExternalStampPrefix(dep.file)
 
-        scalaInstance.libraryJars
+        scalaInstance.libraryJars.view
           .map(FileUtil.getNameWithoutRulesJvmExternalStampPrefix)
           .contains(filteredDepFileName)
       }