diff --git a/asm/src/main/java/dev/openrs2/asm/io/JarLibraryReader.kt b/asm/src/main/java/dev/openrs2/asm/io/JarLibraryReader.kt
index 9566c63b5c..645f761b07 100644
--- a/asm/src/main/java/dev/openrs2/asm/io/JarLibraryReader.kt
+++ b/asm/src/main/java/dev/openrs2/asm/io/JarLibraryReader.kt
@@ -8,7 +8,9 @@ import org.objectweb.asm.tree.ClassNode
 import java.io.InputStream
 import java.util.jar.JarInputStream
 
-class JarLibraryReader : LibraryReader {
+object JarLibraryReader : LibraryReader {
+    private const val CLASS_SUFFIX = ".class"
+
     override fun read(input: InputStream): Library {
         val library = Library()
 
@@ -28,8 +30,4 @@ class JarLibraryReader : LibraryReader {
 
         return library
     }
-
-    private companion object {
-        private const val CLASS_SUFFIX = ".class"
-    }
 }
diff --git a/asm/src/main/java/dev/openrs2/asm/io/JarLibraryWriter.kt b/asm/src/main/java/dev/openrs2/asm/io/JarLibraryWriter.kt
index baac374506..e2c5a34867 100644
--- a/asm/src/main/java/dev/openrs2/asm/io/JarLibraryWriter.kt
+++ b/asm/src/main/java/dev/openrs2/asm/io/JarLibraryWriter.kt
@@ -4,7 +4,7 @@ import dev.openrs2.util.io.DeterministicJarOutputStream
 import java.io.OutputStream
 import java.util.jar.JarOutputStream
 
-class JarLibraryWriter : AbstractJarLibraryWriter() {
+object JarLibraryWriter : AbstractJarLibraryWriter() {
     override fun createJarOutputStream(output: OutputStream): JarOutputStream {
         return DeterministicJarOutputStream(output)
     }
diff --git a/asm/src/main/java/dev/openrs2/asm/io/Js5LibraryWriter.kt b/asm/src/main/java/dev/openrs2/asm/io/Js5LibraryWriter.kt
index 5e49969e9b..bea7a99a37 100644
--- a/asm/src/main/java/dev/openrs2/asm/io/Js5LibraryWriter.kt
+++ b/asm/src/main/java/dev/openrs2/asm/io/Js5LibraryWriter.kt
@@ -4,7 +4,7 @@ import dev.openrs2.asm.classpath.ClassPath
 import dev.openrs2.asm.classpath.Library
 import java.io.OutputStream
 
-class Js5LibraryWriter : LibraryWriter {
+object Js5LibraryWriter : LibraryWriter {
     override fun write(output: OutputStream, classPath: ClassPath, library: Library) {
         // TODO(gpe): implement
     }
diff --git a/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryReader.kt b/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryReader.kt
index 0dbd0cf00f..9d7d513102 100644
--- a/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryReader.kt
+++ b/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryReader.kt
@@ -8,7 +8,7 @@ import java.io.InputStream
 import java.util.jar.JarOutputStream
 import java.util.jar.Pack200
 
-class Pack200LibraryReader : LibraryReader {
+object Pack200LibraryReader : LibraryReader {
     override fun read(input: InputStream): Library {
         ByteArrayOutputStream().use { tempOutput ->
             Gzip.createHeaderlessInputStream(input).use { gzipInput ->
@@ -18,7 +18,7 @@ class Pack200LibraryReader : LibraryReader {
             }
 
             return ByteArrayInputStream(tempOutput.toByteArray()).use { tempInput ->
-                JarLibraryReader().read(tempInput)
+                JarLibraryReader.read(tempInput)
             }
         }
     }
diff --git a/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryWriter.kt b/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryWriter.kt
index 5c3f2077e0..7fd40c3a1f 100644
--- a/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryWriter.kt
+++ b/asm/src/main/java/dev/openrs2/asm/io/Pack200LibraryWriter.kt
@@ -9,10 +9,10 @@ import java.io.OutputStream
 import java.util.jar.JarInputStream
 import java.util.jar.Pack200
 
-class Pack200LibraryWriter : LibraryWriter {
+object Pack200LibraryWriter : LibraryWriter {
     override fun write(output: OutputStream, classPath: ClassPath, library: Library) {
         ByteArrayOutputStream().use { tempOutput ->
-            JarLibraryWriter().write(tempOutput, classPath, library)
+            JarLibraryWriter.write(tempOutput, classPath, library)
 
             return JarInputStream(ByteArrayInputStream(tempOutput.toByteArray())).use { jarInput ->
                 Gzip.createHeaderlessOutputStream(output).use { gzipOutput ->
diff --git a/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt b/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt
index a1e0fd1cab..3f7d529a4c 100644
--- a/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt
+++ b/bundler/src/main/java/dev/openrs2/bundler/Bundler.kt
@@ -79,25 +79,25 @@ class Bundler @Inject constructor(
         logger.info { "Compressing resources" }
 
         val unpackerJar = Resource.compressLibrary(
-            "unpackclass.pack", "game_unpacker.dat", classPath, unpacker, JarLibraryWriter()
+            "unpackclass.pack", "game_unpacker.dat", classPath, unpacker, JarLibraryWriter
         )
         val clientPack = Resource.compressLibrary(
-            "runescape.pack200", "main_file_cache.dat0", classPath, client, Pack200LibraryWriter()
+            "runescape.pack200", "main_file_cache.dat0", classPath, client, Pack200LibraryWriter
         )
         val clientJs5 = Resource.compressLibrary(
-            "runescape.js5", "main_file_cache.dat1", classPath, client, Js5LibraryWriter()
+            "runescape.js5", "main_file_cache.dat1", classPath, client, Js5LibraryWriter
         )
         val glClientPack = Resource.compressLibrary(
-            "runescape_gl.pack200", "main_file_cache.dat3", glClassPath, glClient, Pack200LibraryWriter()
+            "runescape_gl.pack200", "main_file_cache.dat3", glClassPath, glClient, Pack200LibraryWriter
         )
         val glClientJs5 = Resource.compressLibrary(
-            "runescape_gl.js5", "main_file_cache.dat4", glClassPath, glClient, Js5LibraryWriter()
+            "runescape_gl.js5", "main_file_cache.dat4", glClassPath, glClient, Js5LibraryWriter
         )
         val glPack = Resource.compressLibrary(
-            "jaggl.pack200", "main_file_cache.dat5", glClassPath, gl, Pack200LibraryWriter()
+            "jaggl.pack200", "main_file_cache.dat5", glClassPath, gl, Pack200LibraryWriter
         )
         val glJs5 = Resource.compressLibrary(
-            "jaggl.js5", "main_file_cache.dat6", glClassPath, gl, Js5LibraryWriter()
+            "jaggl.js5", "main_file_cache.dat6", glClassPath, gl, Js5LibraryWriter
         )
 
         val glNatives = Resource.compressGlNatives()
@@ -150,7 +150,7 @@ class Bundler @Inject constructor(
         logger.info { "Reading jar $path" }
 
         return Files.newInputStream(path).use { input ->
-            JarLibraryReader().read(input)
+            JarLibraryReader.read(input)
         }
     }
 
@@ -158,7 +158,7 @@ class Bundler @Inject constructor(
         logger.info { "Reading pack $path" }
 
         return Files.newInputStream(path).use { input ->
-            Pack200LibraryReader().read(input)
+            Pack200LibraryReader.read(input)
         }
     }
 
diff --git a/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt b/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt
index 8d0e115994..a7607db57b 100644
--- a/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt
+++ b/deob/src/main/java/dev/openrs2/deob/Deobfuscator.kt
@@ -123,7 +123,7 @@ class Deobfuscator @Inject constructor(
         logger.info { "Reading jar $path" }
 
         return Files.newInputStream(path).use { input ->
-            JarLibraryReader().read(input)
+            JarLibraryReader.read(input)
         }
     }
 
@@ -131,7 +131,7 @@ class Deobfuscator @Inject constructor(
         logger.info { "Reading pack $path" }
 
         return Files.newInputStream(path).use { input ->
-            Pack200LibraryReader().read(input)
+            Pack200LibraryReader.read(input)
         }
     }
 
@@ -139,7 +139,7 @@ class Deobfuscator @Inject constructor(
         logger.info { "Writing jar $path" }
 
         Files.newOutputStream(path).use { output ->
-            JarLibraryWriter().write(output, classPath, library)
+            JarLibraryWriter.write(output, classPath, library)
         }
     }