diff --git a/build.gradle.kts b/build.gradle.kts
index c9aea799..2a3a109a 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -78,6 +78,8 @@ apiValidation {
     nonPublicMarkers.add("org.jetbrains.annotations.ApiStatus\$Internal")
 }
 
+java.withSourcesJar()
+
 publishing.publications.named<MavenPublication>("maven") {
     artifactId = "elementa"
 }
diff --git a/unstable/layoutdsl/build.gradle.kts b/unstable/layoutdsl/build.gradle.kts
index e3db468f..dd6d03de 100644
--- a/unstable/layoutdsl/build.gradle.kts
+++ b/unstable/layoutdsl/build.gradle.kts
@@ -28,6 +28,8 @@ kotlin.jvmToolchain {
     (this as JavaToolchainSpec).languageVersion.set(JavaLanguageVersion.of(8))
 }
 
+java.withSourcesJar()
+
 publishing {
     publications {
         named<MavenPublication>("maven") {
diff --git a/unstable/statev2/build.gradle.kts b/unstable/statev2/build.gradle.kts
index cff1694a..61904140 100644
--- a/unstable/statev2/build.gradle.kts
+++ b/unstable/statev2/build.gradle.kts
@@ -28,6 +28,8 @@ kotlin.jvmToolchain {
     (this as JavaToolchainSpec).languageVersion.set(JavaLanguageVersion.of(8))
 }
 
+java.withSourcesJar()
+
 publishing {
     publications {
         named<MavenPublication>("maven") {