diff --git a/gradle.properties b/gradle.properties
index 95b29c4..08d13f4 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,5 +5,5 @@ loom_version_010Legacy=0.10.0.171
 loom_version_010=0.10.0.188
 loom_version_011=0.11.0.217
 loom_version_11=1.1.313
-transformer_version=5.2.77
+transformer_version=5.2.78
 base_version=3.4
\ No newline at end of file
diff --git a/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt b/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt
index e5bc8d0..db1bc72 100644
--- a/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt
+++ b/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt
@@ -30,7 +30,7 @@ import java.util.jar.JarOutputStream
 import java.util.jar.Manifest
 
 open class ArchitectPluginExtension(val project: Project) {
-    var transformerVersion = "5.2.77"
+    var transformerVersion = "5.2.78"
     var injectablesVersion = "1.0.10"
     var minecraft = ""
     private var compileOnly = false
@@ -265,6 +265,7 @@ open class ArchitectPluginExtension(val project: Project) {
 
     data class CommonSettings(
         val loaders: MutableSet<ModLoader> = LinkedHashSet(),
+        val platformPackages: MutableMap<ModLoader, String> = mutableMapOf(),
     ) {
         constructor(loaders: Array<String>) : this() {
             this.loaders.addAll(loaders.map { ModLoader.valueOf(it) })
@@ -308,6 +309,14 @@ open class ArchitectPluginExtension(val project: Project) {
         fun clear() {
             loaders.clear()
         }
+
+        fun platformPackage(loader: String, packageName: String) {
+            platformPackages[ModLoader.valueOf(loader)] = packageName
+        }
+
+        fun platformPackage(loader: ModLoader, packageName: String) {
+            platformPackages[loader] = packageName
+        }
     }
 
     fun platformSetupLoomIde() {
@@ -391,7 +400,7 @@ open class ArchitectPluginExtension(val project: Project) {
                 project.tasks.register("transformProduction${loader.titledId}", TransformingTask::class.java) {
                     it.group = "Architectury"
                     it.platform = loader.id
-                    loader.transformProduction(it, loom)
+                    loader.transformProduction(it, loom, settings)
 
                     it.archiveClassifier.set("transformProduction${loader.titledId}")
                     it.input.set(jarTask.archiveFile)
@@ -439,7 +448,8 @@ data class Transform(
     val project: Project,
     val devConfigName: String,
     val transformers: MutableList<Function<Path, TransformerPair>> = mutableListOf(),
-    var envAnnotationProvider: String = "net.fabricmc:fabric-loader:+"
+    var envAnnotationProvider: String = "net.fabricmc:fabric-loader:+",
+    var platformPackage: String? = null,
 ) {
     operator fun plusAssign(transformer: TransformerPair) {
         transformers.add(Function { transformer })
diff --git a/src/main/kotlin/dev/architectury/plugin/ModLoader.kt b/src/main/kotlin/dev/architectury/plugin/ModLoader.kt
index 39b9ce3..7459229 100644
--- a/src/main/kotlin/dev/architectury/plugin/ModLoader.kt
+++ b/src/main/kotlin/dev/architectury/plugin/ModLoader.kt
@@ -7,7 +7,7 @@ import dev.architectury.transformer.transformers.*
 open class ModLoader(
     val id: String,
     val transformDevelopment: Transform.() -> Unit,
-    val transformProduction: TransformingTask.(loom: LoomInterface) -> Unit,
+    val transformProduction: TransformingTask.(loom: LoomInterface, settings: ArchitectPluginExtension.CommonSettings) -> Unit,
 ) {
     init {
         LOADERS[id] = this
@@ -23,20 +23,27 @@ open class ModLoader(
         val FABRIC = ModLoader(
             id = "fabric",
             transformDevelopment = {
+                val transform = this
                 this += RuntimeMixinRefmapDetector::class.java
                 this += GenerateFakeFabricMod::class.java
                 add(TransformExpectPlatform::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    if (transform.platformPackage != null) {
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = transform.platformPackage!!
+                    }
                 }
                 add(RemapInjectables::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
                 }
                 this += TransformPlatformOnly::class.java
             },
-            transformProduction = {
+            transformProduction = { _, settings ->
                 this += RemapMixinVariables()
                 add(TransformExpectPlatform()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    settings.platformPackages[valueOf("fabric")]?.let { platformPackage ->
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = platformPackage
+                    }
                 }
                 add(RemapInjectables()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
@@ -49,9 +56,13 @@ open class ModLoader(
         val FORGE = ModLoader(
             id = "forge",
             transformDevelopment = {
+                val transform = this
                 this += RuntimeMixinRefmapDetector::class.java
                 add(TransformExpectPlatform::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    if (transform.platformPackage != null) {
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = transform.platformPackage!!
+                    }
                 }
                 add(RemapInjectables::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
@@ -63,9 +74,12 @@ open class ModLoader(
                 this += GenerateFakeForgeMod::class.java
                 this += FixForgeMixin::class.java
             },
-            transformProduction = { loom ->
+            transformProduction = { loom, settings ->
                 add(TransformExpectPlatform()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    settings.platformPackages[valueOf("forge")]?.let { platformPackage ->
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = platformPackage
+                    }
                 }
                 add(RemapInjectables()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
@@ -84,8 +98,12 @@ open class ModLoader(
         val NEOFORGE = object : ModLoader(
             id = "neoforge",
             transformDevelopment = {
+                val transform = this
                 add(TransformExpectPlatform::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    if (transform.platformPackage != null) {
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = transform.platformPackage!!
+                    }
                 }
                 add(RemapInjectables::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
@@ -96,9 +114,12 @@ open class ModLoader(
                 this += TransformNeoForgeEnvironment::class.java
                 this += GenerateFakeNeoForgeMod::class.java
             },
-            transformProduction = { loom ->
+            transformProduction = { _, settings ->
                 add(TransformExpectPlatform()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    settings.platformPackages[valueOf("neoforge")]?.let { platformPackage ->
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = platformPackage
+                    }
                 }
                 add(RemapInjectables()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
@@ -116,10 +137,14 @@ open class ModLoader(
         val QUILT = ModLoader(
             id = "quilt",
             transformDevelopment = {
+                val transform = this
                 this += RuntimeMixinRefmapDetector::class.java
                 this += GenerateFakeQuiltMod::class.java
                 add(TransformExpectPlatform::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    if (transform.platformPackage != null) {
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = transform.platformPackage!!
+                    }
                 }
                 add(RemapInjectables::class.java) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
@@ -127,10 +152,13 @@ open class ModLoader(
                 this += TransformPlatformOnly::class.java
                 envAnnotationProvider = "org.quiltmc:quilt-loader:+"
             },
-            transformProduction = {
+            transformProduction = { _, settings ->
                 this += RemapMixinVariables()
                 add(TransformExpectPlatform()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)
+                    settings.platformPackages[valueOf("quilt")]?.let { platformPackage ->
+                        this[BuiltinProperties.PLATFORM_PACKAGE] = platformPackage
+                    }
                 }
                 add(RemapInjectables()) { file ->
                     this[BuiltinProperties.UNIQUE_IDENTIFIER] = projectGeneratedPackage(project, file)