diff --git a/src/main/java/net/fabricmc/loom/build/mixin/AnnotationProcessorInvoker.java b/src/main/java/net/fabricmc/loom/build/mixin/AnnotationProcessorInvoker.java
index c3a904c9..09cfd3c9 100644
--- a/src/main/java/net/fabricmc/loom/build/mixin/AnnotationProcessorInvoker.java
+++ b/src/main/java/net/fabricmc/loom/build/mixin/AnnotationProcessorInvoker.java
@@ -65,16 +65,18 @@ public abstract class AnnotationProcessorInvoker<T extends Task> {
 	private final LoomGradleExtension loomExtension;
 	protected final MixinExtension mixinExtension;
 	protected final Map<SourceSet, T> invokerTasks;
+	private final String name;
 	private final Collection<Configuration> apConfigurations;
 
 	protected AnnotationProcessorInvoker(Project project,
-										Collection<Configuration> apConfigurations,
-										Map<SourceSet, T> invokerTasks) {
+											Collection<Configuration> apConfigurations,
+											Map<SourceSet, T> invokerTasks, String name) {
 		this.project = project;
 		this.loomExtension = LoomGradleExtension.get(project);
 		this.mixinExtension = loomExtension.getMixin();
 		this.apConfigurations = apConfigurations;
 		this.invokerTasks = invokerTasks;
+		this.name = name;
 	}
 
 	protected static Collection<Configuration> getApConfigurations(Project project, Function<SourceSet, String> getApConfigNameFunc) {
@@ -97,7 +99,7 @@ public abstract class AnnotationProcessorInvoker<T extends Task> {
 
 			final File mixinMappings = getMixinMappingsForSourceSet(project, sourceSet);
 
-			task.getOutputs().file(mixinMappings).withPropertyName("mixin-ap-" + sourceSet.getName()).optional();
+			task.getOutputs().file(mixinMappings).withPropertyName("mixin-ap-" + sourceSet.getName() + "-" + name).optional();
 
 			Map<String, String> args = new HashMap<>() {{
 					put(Constants.MixinArguments.IN_MAP_FILE_NAMED_INTERMEDIARY, loom.getMappingConfiguration().tinyMappings.toFile().getCanonicalPath());
diff --git a/src/main/java/net/fabricmc/loom/build/mixin/GroovyApInvoker.java b/src/main/java/net/fabricmc/loom/build/mixin/GroovyApInvoker.java
index 2f0d9623..ab85b465 100644
--- a/src/main/java/net/fabricmc/loom/build/mixin/GroovyApInvoker.java
+++ b/src/main/java/net/fabricmc/loom/build/mixin/GroovyApInvoker.java
@@ -42,7 +42,8 @@ public class GroovyApInvoker extends AnnotationProcessorInvoker<GroovyCompile> {
 		super(
 				project,
 				ImmutableList.of(),
-				getInvokerTasks(project));
+				getInvokerTasks(project),
+				AnnotationProcessorInvoker.GROOVY);
 	}
 
 	private static Map<SourceSet, GroovyCompile> getInvokerTasks(Project project) {
diff --git a/src/main/java/net/fabricmc/loom/build/mixin/JavaApInvoker.java b/src/main/java/net/fabricmc/loom/build/mixin/JavaApInvoker.java
index 00f3d980..5450009d 100644
--- a/src/main/java/net/fabricmc/loom/build/mixin/JavaApInvoker.java
+++ b/src/main/java/net/fabricmc/loom/build/mixin/JavaApInvoker.java
@@ -41,7 +41,8 @@ public class JavaApInvoker extends AnnotationProcessorInvoker<JavaCompile> {
 		super(
 				project,
 				AnnotationProcessorInvoker.getApConfigurations(project, SourceSet::getAnnotationProcessorConfigurationName),
-				getInvokerTasks(project));
+				getInvokerTasks(project),
+				AnnotationProcessorInvoker.JAVA);
 	}
 
 	private static Map<SourceSet, JavaCompile> getInvokerTasks(Project project) {
diff --git a/src/main/java/net/fabricmc/loom/build/mixin/KaptApInvoker.java b/src/main/java/net/fabricmc/loom/build/mixin/KaptApInvoker.java
index d17b34b7..f5ae7554 100644
--- a/src/main/java/net/fabricmc/loom/build/mixin/KaptApInvoker.java
+++ b/src/main/java/net/fabricmc/loom/build/mixin/KaptApInvoker.java
@@ -51,7 +51,8 @@ public class KaptApInvoker extends AnnotationProcessorInvoker<JavaCompile> {
 		super(
 				project,
 				AnnotationProcessorInvoker.getApConfigurations(project, KaptApInvoker::getKaptConfigurationName),
-				getInvokerTasks(project));
+				getInvokerTasks(project),
+				"Kotlin");
 
 		try {
 			dummyRefmapDirectory = Files.createTempDirectory("temp_refmap").toFile();
diff --git a/src/main/java/net/fabricmc/loom/build/mixin/ScalaApInvoker.java b/src/main/java/net/fabricmc/loom/build/mixin/ScalaApInvoker.java
index d361b837..81133208 100644
--- a/src/main/java/net/fabricmc/loom/build/mixin/ScalaApInvoker.java
+++ b/src/main/java/net/fabricmc/loom/build/mixin/ScalaApInvoker.java
@@ -43,7 +43,8 @@ public class ScalaApInvoker extends AnnotationProcessorInvoker<ScalaCompile> {
 				project,
 				// Scala just uses the java AP configuration afaik. This of course assumes the java AP also gets configured.
 				ImmutableList.of(),
-				getInvokerTasks(project));
+				getInvokerTasks(project),
+				AnnotationProcessorInvoker.SCALA);
 	}
 
 	private static Map<SourceSet, ScalaCompile> getInvokerTasks(Project project) {