Small change part 2.

Author: MartinSVK12

build.gradle

@@ -191,6 +191,7 @@ modrinth {
 	versionNumber = project.mod_version // You don't need to set this manually. Will fail if Modrinth has this version already
 	versionType = "release" // This is the default -- can also be `beta` or `alpha`
 	uploadFile = remapJar // With Loom, this MUST be set to `remapJar` instead of `jar`!
+	additionalFiles = [remapSourcesJar]
 	gameVersions = ["b1.7.3"] // Must be an array, even with only one version
 	loaders = ["fabric"] // Must also be an array - no need to specify this if you're using Loom or ForgeGradle
 	changelog = Files.readString(java.nio.file.Path.of("${rootProject.projectDir}/CHANGELOG.md"))