diff --git a/build.gradle b/build.gradle
index 80d82d1..e910c1f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.8.10'
+    ext.kotlin_version = '1.8.22'
 
     repositories {
         mavenCentral()
diff --git a/src/main/kotlin/com/commit451/okyo/Okyo.kt b/src/main/kotlin/com/commit451/okyo/Okyo.kt
index 2cfacde..c9d0bed 100644
--- a/src/main/kotlin/com/commit451/okyo/Okyo.kt
+++ b/src/main/kotlin/com/commit451/okyo/Okyo.kt
@@ -1,3 +1,5 @@
+@file:Suppress("unused")
+
 package com.commit451.okyo
 
 import okio.buffer
@@ -69,7 +71,7 @@ object Okyo {
 
     @JvmStatic
     @Throws(IOException::class)
-    private fun writeFileToOutputStream(fileToReadFrom: File, outputStream: OutputStream) {
+    inline fun writeFileToOutputStream(fileToReadFrom: File, outputStream: OutputStream) {
         val sink = outputStream.sink().buffer()
         val source = fileToReadFrom.source().buffer()
         sink.writeAll(source)