diff --git a/build-caching/src/main/java/com/vertispan/j2cl/build/Project.java b/build-caching/src/main/java/com/vertispan/j2cl/build/Project.java
index f25ebeb1..53822eca 100644
--- a/build-caching/src/main/java/com/vertispan/j2cl/build/Project.java
+++ b/build-caching/src/main/java/com/vertispan/j2cl/build/Project.java
@@ -5,6 +5,7 @@
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Optional;
@@ -27,9 +28,7 @@ public class Project implements com.vertispan.j2cl.build.task.Project {
 
     private File jar;
 
-    private Optional<Boolean> isAPT = Optional.empty();
-
-    private Set<String> processors = new HashSet<>();
+    private Set<String> processors;
 
     public Project(String key) {
         this.key = key;
@@ -99,53 +98,35 @@ public boolean isJsZip() {
         return isJsZip;
     }
 
-    /*
-     * This is a bit of a hack, but it's the only way to know if a jar contains APT processors
-     * Note: isAPT() must be called before getProcessors
-     */
     @Override
-    public boolean isAPT() {
-        if (isAPT.isEmpty()) {
+    public File getJar() {
+        return jar;
+    }
+
+    public void setJar(File jar) {
+        this.jar = jar;
+    }
+
+    @Override
+    public Set<String> getProcessors() {
+        if (processors == null) {
             if (jar == null || isJsZip() || hasSourcesMapped()) {
-                isAPT = Optional.of(false);
-                return false;
+                processors = Collections.emptySet();
             } else if (jar.exists()) {
+                processors = new HashSet<>();
                 try (ZipFile zipFile = new ZipFile(jar)) {
                     ZipEntry entry = zipFile.getEntry("META-INF/services/javax.annotation.processing.Processor");
                     if (entry != null) {
-                        this.isAPT = Optional.of(true);
-
                         try (InputStreamReader inputStreamReader = new InputStreamReader(zipFile.getInputStream(entry), StandardCharsets.UTF_8);
                              BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
                             bufferedReader.lines().forEach(line -> processors.add(line.trim()));
-                            if (!processors.isEmpty()) {
-                                this.isAPT = Optional.of(true);
-                            }
-                        } catch (IOException e) {
-                            throw new RuntimeException(e);
                         }
-                    } else {
-                        this.isAPT = Optional.of(false);
                     }
                 } catch (IOException e) {
                     throw new RuntimeException(e);
                 }
             }
         }
-        return isAPT.get();
-    }
-
-    @Override
-    public File getJar() {
-        return jar;
-    }
-
-    public void setJar(File jar) {
-        this.jar = jar;
-    }
-
-    @Override
-    public Set<String> getProcessors() {
         return processors;
     }
 }
diff --git a/build-caching/src/main/java/com/vertispan/j2cl/build/task/Project.java b/build-caching/src/main/java/com/vertispan/j2cl/build/task/Project.java
index 896d872e..061fdc08 100644
--- a/build-caching/src/main/java/com/vertispan/j2cl/build/task/Project.java
+++ b/build-caching/src/main/java/com/vertispan/j2cl/build/task/Project.java
@@ -21,9 +21,7 @@ public interface Project {
      * @return true if this project should only be used for its JS content, false otherwise
      */
     boolean isJsZip();
-
-    boolean isAPT();
-
+    
     File getJar();
 
     /**
diff --git a/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/BytecodeTask.java b/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/BytecodeTask.java
index ee69c861..14d46cd8 100644
--- a/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/BytecodeTask.java
+++ b/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/BytecodeTask.java
@@ -81,7 +81,7 @@ public Task resolve(Project project, Config config) {
 
         List<Input> bytecodeClasspath = scope(project.getDependencies()
                         .stream()
-                        .filter(dependency -> !dependency.getProject().isAPT()).collect(Collectors.toSet()),
+                        .filter(dependency -> dependency.getProject().getProcessors().isEmpty()).collect(Collectors.toSet()),
                 com.vertispan.j2cl.build.task.Dependency.Scope.COMPILE)
                 .stream()
                 .map(inputs(OutputTypes.BYTECODE))
@@ -101,7 +101,7 @@ public Task resolve(Project project, Config config) {
         project.getDependencies()
                 .stream()
                 .map(d -> d.getProject())
-                .filter(Project::isAPT)
+                .filter(p -> !p.getProcessors().isEmpty())
                 .forEach(p -> {
                     processors.addAll(p.getProcessors());
                     extraClasspath.add(p.getJar());
diff --git a/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/J2clTask.java b/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/J2clTask.java
index cc032950..0018e5af 100644
--- a/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/J2clTask.java
+++ b/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/J2clTask.java
@@ -43,7 +43,7 @@ public Task resolve(Project project, Config config) {
 
         // From our classpath, j2cl is only interested in our compile classpath's bytecode
         List<Input> classpathHeaders = scope(project.getDependencies().stream()
-                .filter(dep -> !dep.getProject().isAPT())
+                .filter(dep -> dep.getProject().getProcessors().isEmpty())
                 .collect(Collectors.toSet()), com.vertispan.j2cl.build.task.Dependency.Scope.COMPILE)
                 .stream()
                 .map(inputs(OutputTypes.STRIPPED_BYTECODE_HEADERS))
diff --git a/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/TurbineTask.java b/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/TurbineTask.java
index 2a217f95..07eb6da0 100644
--- a/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/TurbineTask.java
+++ b/j2cl-tasks/src/main/java/com/vertispan/j2cl/build/provided/TurbineTask.java
@@ -52,7 +52,7 @@ public Task resolve(Project project, Config config) {
         List<File> extraClasspath = config.getExtraClasspath();
 
         List<Input> compileClasspath = scope(project.getDependencies().stream()
-                        .filter(dep -> !dep.getProject().isAPT())
+                        .filter(dep -> dep.getProject().getProcessors().isEmpty())
                         .collect(Collectors.toSet()), Dependency.Scope.COMPILE)
                 .stream()
                 .map(p -> input(p, OutputTypes.STRIPPED_BYTECODE_HEADERS))