diff --git a/tracing-api/build.gradle b/tracing-api/build.gradle
index d29891b17..61a123c3f 100644
--- a/tracing-api/build.gradle
+++ b/tracing-api/build.gradle
@@ -10,5 +10,5 @@ dependencies {
     testCompile "org.mockito:mockito-core"
     testCompile "com.fasterxml.jackson.dataformat:jackson-dataformat-yaml"
 
-    processor "org.immutables:value"
+    annotationProcessor "org.immutables:value"
 }
diff --git a/tracing-jaxrs/build.gradle b/tracing-jaxrs/build.gradle
index c2fd49a87..c09aab3dd 100644
--- a/tracing-jaxrs/build.gradle
+++ b/tracing-jaxrs/build.gradle
@@ -28,5 +28,5 @@ dependencies {
     testCompile "org.jmock:jmock"
     testCompile "org.mockito:mockito-core"
 
-    processor "org.immutables:value"
+    annotationProcessor "org.immutables:value"
 }
diff --git a/tracing/build.gradle b/tracing/build.gradle
index a1315e6cd..47f9a592e 100644
--- a/tracing/build.gradle
+++ b/tracing/build.gradle
@@ -35,5 +35,5 @@ dependencies {
     testCompile "org.mockito:mockito-core"
     testCompile "io.zipkin.java:zipkin"
 
-    processor "org.immutables:value"
+    annotationProcessor "org.immutables:value"
 }