diff --git a/fabric/build.gradle.kts b/fabric/build.gradle.kts
index 27050bf..8407bb6 100644
--- a/fabric/build.gradle.kts
+++ b/fabric/build.gradle.kts
@@ -137,6 +137,7 @@ publishMods {
         from(curseforgePublish)
         modLoaders.add(project.name)
         file.set(tasks.remapJar.get().archiveFile)
+        additionalFiles.plus(tasks.sourcesJar.get().archiveFile)
         displayName = "$title $version ${titles[project.name]} $minecraftVersion"
         this.version = "$version-mc$minecraftVersion-${project.name}"
         requires("fabric-language-kotlin", "forge-config-api-port-fabric", "fabric-api")
@@ -146,6 +147,7 @@ publishMods {
         from(modrinthPublish)
         modLoaders.add(project.name)
         file.set(tasks.remapJar.get().archiveFile)
+        additionalFiles.plus(tasks.sourcesJar.get().archiveFile)
         displayName = "$title $version ${titles[project.name]} $minecraftVersion"
         this.version = "$version-mc$minecraftVersion-${project.name}"
         requires("fabric-language-kotlin", "forge-config-api-port-fabric", "fabric-api")
diff --git a/neoforge/build.gradle.kts b/neoforge/build.gradle.kts
index a58a14a..12d3812 100644
--- a/neoforge/build.gradle.kts
+++ b/neoforge/build.gradle.kts
@@ -155,6 +155,7 @@ publishMods {
         from(curseforgePublish)
         modLoaders.add(project.name)
         file.set(tasks.jarJar.get().archiveFile)
+        additionalFiles.plus(tasks.sourcesJar.get().archiveFile)
         displayName = "$title $version ${titles[project.name]} $minecraftVersion"
         this.version = "$version-mc$minecraftVersion-${project.name}"
         requires("kotlin-for-forge")
@@ -164,6 +165,7 @@ publishMods {
         from(modrinthPublish)
         modLoaders.add(project.name)
         file.set(tasks.jarJar.get().archiveFile)
+        additionalFiles.plus(tasks.sourcesJar.get().archiveFile)
         displayName = "$title $version ${titles[project.name]} $minecraftVersion"
         this.version = "$version-mc$minecraftVersion-${project.name}"
         requires("kotlin-for-forge")