diff --git a/src/minecraft/kotlin/xyz/wagyourtail/unimined/internal/minecraft/MinecraftProvider.kt b/src/minecraft/kotlin/xyz/wagyourtail/unimined/internal/minecraft/MinecraftProvider.kt
index e91f756c..972677cc 100644
--- a/src/minecraft/kotlin/xyz/wagyourtail/unimined/internal/minecraft/MinecraftProvider.kt
+++ b/src/minecraft/kotlin/xyz/wagyourtail/unimined/internal/minecraft/MinecraftProvider.kt
@@ -717,7 +717,7 @@ open class MinecraftProvider(project: Project, sourceSet: SourceSet) : Minecraft
             if (!project.gradle.startParameter.isOffline) {
                 //test if betacraft has our version on file
                 val url = URI.create(
-                    "http://files.betacraft.uk/launcher/assets/jsons/${
+                    "https://files.betacraft.uk/launcher/assets/jsons/${
                         URLEncoder.encode(
                             minecraftData.metadata.id,
                             StandardCharsets.UTF_8.name()
diff --git a/src/source/kotlin/xyz/wagyourtail/unimined/internal/source/generator/SourceGeneratorImpl.kt b/src/source/kotlin/xyz/wagyourtail/unimined/internal/source/generator/SourceGeneratorImpl.kt
index 8bfec693..b66cf5d2 100644
--- a/src/source/kotlin/xyz/wagyourtail/unimined/internal/source/generator/SourceGeneratorImpl.kt
+++ b/src/source/kotlin/xyz/wagyourtail/unimined/internal/source/generator/SourceGeneratorImpl.kt
@@ -1,6 +1,7 @@
 package xyz.wagyourtail.unimined.internal.source.generator
 
 import org.apache.commons.compress.archivers.zip.ZipFile
+import org.gradle.api.GradleException
 import org.gradle.api.Project
 import org.gradle.api.artifacts.Dependency
 import org.gradle.api.file.FileCollection
@@ -60,13 +61,27 @@ class SourceGeneratorImpl(val project: Project, val provider: SourceProvider) :
         project.javaexec { spec ->
 
             val toolchain = project.extensions.getByType(JavaToolchainService::class.java)
-            spec.executable = toolchain.launcherFor {
-                it.languageVersion.set(JavaLanguageVersion.of(11))
-            }.orElse(
+            spec.executable = try {
                 toolchain.launcherFor {
-                    it.languageVersion.set(JavaLanguageVersion.of(17))
+                    it.languageVersion.set(JavaLanguageVersion.of(11))
+                }.get()
+            } catch (e: GradleException) {
+                try {
+                    toolchain.launcherFor {
+                        it.languageVersion.set(JavaLanguageVersion.of(17))
+                    }.get()
+                } catch (ex: GradleException) {
+                    try {
+                        toolchain.launcherFor {
+                            it.languageVersion.set(JavaLanguageVersion.of(21))
+                        }.get()
+                    } catch (exc: GradleException) {
+                        exc.addSuppressed(e)
+                        exc.addSuppressed(ex)
+                        throw exc
+                    }
                 }
-            ).get().executablePath.asFile.absolutePath
+            }.executablePath.asFile.absolutePath
 
             spec.jvmArgs(jvmArgs)
             spec.classpath(generator)