diff --git a/orx-jvm/orx-kotlin-parser/build.gradle.kts b/orx-jvm/orx-kotlin-parser/build.gradle.kts
index 1252a4a6..0bf7dfa7 100644
--- a/orx-jvm/orx-kotlin-parser/build.gradle.kts
+++ b/orx-jvm/orx-kotlin-parser/build.gradle.kts
@@ -21,6 +21,7 @@ dependencies {
     implementation(libs.antlr.runtime)
 }
 
+tasks.getByName("compileDemoKotlin").dependsOn("generateDemoGrammarSource")
 tasks.getByName("compileTestKotlin").dependsOn("generateTestGrammarSource")
 tasks.getByName("compileKotlin").dependsOn("generateGrammarSource")
 tasks.getByName("sourcesJar").dependsOn("generateGrammarSource")