diff --git a/src/loom010/kotlin/dev/architectury/plugin/loom/LoomInterface010.kt b/src/loom010/kotlin/dev/architectury/plugin/loom/LoomInterface010.kt
index 1cbee13..134f1b3 100644
--- a/src/loom010/kotlin/dev/architectury/plugin/loom/LoomInterface010.kt
+++ b/src/loom010/kotlin/dev/architectury/plugin/loom/LoomInterface010.kt
@@ -30,6 +30,8 @@ class LoomInterface010(private val project: Project) : LoomInterface {
             extension.setGenerateSrgTiny(value)
         }
 
+    override val generateTransformerPropertiesInTask = false
+
     override fun settingsPostEdit(action: (config: LoomInterface.LoomRunConfig) -> Unit) {
         extension.settingsPostEdit.add(Consumer { c -> action(LoomRunConfigImpl(c)) })
     }
diff --git a/src/loom010Legacy/kotlin/dev/architectury/plugin/loom/LoomInterface010Legacy.kt b/src/loom010Legacy/kotlin/dev/architectury/plugin/loom/LoomInterface010Legacy.kt
index b96b927..96f0459 100644
--- a/src/loom010Legacy/kotlin/dev/architectury/plugin/loom/LoomInterface010Legacy.kt
+++ b/src/loom010Legacy/kotlin/dev/architectury/plugin/loom/LoomInterface010Legacy.kt
@@ -30,6 +30,8 @@ class LoomInterface010Legacy(private val project: Project) : LoomInterface {
             extension.setGenerateSrgTiny(value)
         }
 
+    override val generateTransformerPropertiesInTask = false
+
     override fun settingsPostEdit(action: (config: LoomInterface.LoomRunConfig) -> Unit) {
         extension.settingsPostEdit.add(Consumer { c -> action(LoomRunConfigImpl(c)) })
     }
diff --git a/src/loom011/kotlin/dev/architectury/plugin/loom/LoomInterface011.kt b/src/loom011/kotlin/dev/architectury/plugin/loom/LoomInterface011.kt
index 16cec2a..aa3fbd7 100644
--- a/src/loom011/kotlin/dev/architectury/plugin/loom/LoomInterface011.kt
+++ b/src/loom011/kotlin/dev/architectury/plugin/loom/LoomInterface011.kt
@@ -44,6 +44,8 @@ class LoomInterface011(private val project: Project) : LoomInterface {
             extension.setGenerateSrgTiny(value)
         }
 
+    override val generateTransformerPropertiesInTask = true
+
     override fun settingsPostEdit(action: (config: LoomInterface.LoomRunConfig) -> Unit) {
         extension.settingsPostEdit.add(Consumer { c -> action(LoomRunConfigImpl(c)) })
     }
diff --git a/src/loom06/kotlin/dev/architectury/plugin/loom/LoomInterface06.kt b/src/loom06/kotlin/dev/architectury/plugin/loom/LoomInterface06.kt
index c333520..98e1d52 100644
--- a/src/loom06/kotlin/dev/architectury/plugin/loom/LoomInterface06.kt
+++ b/src/loom06/kotlin/dev/architectury/plugin/loom/LoomInterface06.kt
@@ -33,6 +33,8 @@ class LoomInterface06(private val project: Project) : LoomInterface {
             extension.generateSrgTiny = value
         }
 
+    override val generateTransformerPropertiesInTask = false
+
     override fun settingsPostEdit(action: (config: LoomInterface.LoomRunConfig) -> Unit) {
         extension.settingsPostEdit.add(Consumer { c -> action(LoomRunConfigImpl(c)) })
     }
diff --git a/src/loom09/kotlin/dev/architectury/plugin/loom/LoomInterface09.kt b/src/loom09/kotlin/dev/architectury/plugin/loom/LoomInterface09.kt
index 3681510..26c21aa 100644
--- a/src/loom09/kotlin/dev/architectury/plugin/loom/LoomInterface09.kt
+++ b/src/loom09/kotlin/dev/architectury/plugin/loom/LoomInterface09.kt
@@ -30,6 +30,8 @@ class LoomInterface09(private val project: Project) : LoomInterface {
             extension.setGenerateSrgTiny(value)
         }
 
+    override val generateTransformerPropertiesInTask = false
+
     override fun settingsPostEdit(action: (config: LoomInterface.LoomRunConfig) -> Unit) {
         extension.settingsPostEdit.add(Consumer { c -> action(LoomRunConfigImpl(c)) })
     }
diff --git a/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt b/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt
index 6263ccb..c9d622e 100644
--- a/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt
+++ b/src/main/kotlin/dev/architectury/plugin/ArchitecturyPluginExtension.kt
@@ -91,29 +91,21 @@ open class ArchitectPluginExtension(val project: Project) {
 
     init {
         project.afterEvaluate {
-            if (transforms.isNotEmpty()) {
-                StringWriter().also { strWriter ->
-                    TransformersWriter(strWriter).use { writer ->
-                        for (transform in transforms.values) {
-                            project.configurations.getByName(transform.configName).forEach { file ->
-                                transform.transformers.map { it.apply(file.toPath()) }
-                                    .forEach { pair ->
-                                        writer.write(file.toPath(), pair.clazz, pair.properties)
-                                    }
-                            }
-                        }
+            if (loom.generateTransformerPropertiesInTask) {
+                // Only apply if this project has the configureLaunch task.
+                // This is needed because arch plugin can also apply to the root project
+                // where the task doesn't exist and our task isn't needed either.
+                if ("configureLaunch" in project.tasks.names) {
+                    val task = project.tasks.register(
+                        "prepareArchitecturyTransformer",
+                        PrepareArchitecturyTransformer::class.java
+                    )
+                    project.tasks.named("configureLaunch") {
+                        it.dependsOn(task)
                     }
-
-                    runtimeTransformerFile.writeText(strWriter.toString())
-                }
-
-                val properties = Properties()
-                properties(transforms.keys.first()).forEach { (key, value) ->
-                    properties.setProperty(key, value)
-                }
-                propertiesTransformerFile.writer().use {
-                    properties.store(it, "Architectury Runtime Transformer Properties")
                 }
+            } else {
+                prepareTransformer()
             }
         }
     }
@@ -131,6 +123,34 @@ open class ArchitectPluginExtension(val project: Project) {
         )
     }
 
+    fun prepareTransformer() {
+        if (transforms.isNotEmpty()) {
+            StringWriter().also { strWriter ->
+                TransformersWriter(strWriter).use { writer ->
+                    for (transform in transforms.values) {
+                        project.configurations.getByName(transform.configName).forEach { file ->
+                            transform.transformers.map { it.apply(file.toPath()) }
+                                .forEach { pair ->
+                                    writer.write(file.toPath(), pair.clazz, pair.properties)
+                                }
+                        }
+                    }
+                }
+
+                runtimeTransformerFile.writeText(strWriter.toString())
+            }
+
+
+            val properties = Properties()
+            properties(transforms.keys.first()).forEach { (key, value) ->
+                properties.setProperty(key, value)
+            }
+            propertiesTransformerFile.writer().use {
+                properties.store(it, "Architectury Runtime Transformer Properties")
+            }
+        }
+    }
+
     private fun getCompileClasspath(): Iterable<File> {
         return project.configurations.findByName("architecturyTransformerClasspath")
             ?: project.configurations.getByName("compileClasspath")
diff --git a/src/main/kotlin/dev/architectury/plugin/PrepareArchitecturyTransformer.kt b/src/main/kotlin/dev/architectury/plugin/PrepareArchitecturyTransformer.kt
new file mode 100644
index 0000000..24298bb
--- /dev/null
+++ b/src/main/kotlin/dev/architectury/plugin/PrepareArchitecturyTransformer.kt
@@ -0,0 +1,11 @@
+package dev.architectury.plugin
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.TaskAction
+
+open class PrepareArchitecturyTransformer : DefaultTask() {
+    @TaskAction
+    fun run() {
+        project.extensions.getByType(ArchitectPluginExtension::class.java).prepareTransformer()
+    }
+}
diff --git a/src/main/kotlin/dev/architectury/plugin/loom/LoomInterface.kt b/src/main/kotlin/dev/architectury/plugin/loom/LoomInterface.kt
index ba1b36d..d1a0d7c 100644
--- a/src/main/kotlin/dev/architectury/plugin/loom/LoomInterface.kt
+++ b/src/main/kotlin/dev/architectury/plugin/loom/LoomInterface.kt
@@ -12,6 +12,16 @@ interface LoomInterface {
     val refmapName: String
     var generateSrgTiny: Boolean
 
+    /**
+     * Loom 0.11+ has to generate the runtime transformer properties file
+     * in a separate hook that is guaranteed to run after mod dep processing.
+     * (Which is a task hooked to `configureLaunch`.)
+     * This is just unfortunate `afterEvaluate` ordering, sadly.
+     *
+     * See [architectury-loom#72](https://github.com/architectury/architectury-loom/issues/72)
+     */
+    val generateTransformerPropertiesInTask: Boolean
+
     fun settingsPostEdit(action: (config: LoomRunConfig) -> Unit)
     fun setIdeConfigGenerated()
     fun setRemapJarInput(task: Jar, archiveFile: Provider<RegularFile>)