diff --git a/orx-keyframer/build.gradle b/orx-keyframer/build.gradle
index 53c69568..961e7bff 100644
--- a/orx-keyframer/build.gradle
+++ b/orx-keyframer/build.gradle
@@ -44,4 +44,6 @@ dependencies {
     demoRuntimeOnly("org.openrndr:openrndr-gl3:$openrndrVersion")
     demoRuntimeOnly("org.openrndr:openrndr-gl3-natives-$openrndrOS:$openrndrVersion")
     demoImplementation(sourceSets.getByName("main").output)
-}
\ No newline at end of file
+}
+
+tasks.getByName("compileKotlin").dependsOn("generateGrammarSource")
\ No newline at end of file