diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 91b11f36..305052e4 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -18,6 +18,6 @@ jobs:
         with:
           java-version: 1.8
       - name: Upload to Maven
-        run: ./gradlew publish
+        run: ./gradlew publish --stacktrace
         env:
           MAVEN_PASS: ${{ secrets.MAVEN_PASS }}
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index bec31cf9..39c4769a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -47,7 +47,7 @@ sourceSets {
 
 repositories {
 	maven { url "https://maven.fabricmc.net/" }
-	maven { url "https://files.minecraftforge.net/maven/" }
+	maven { url "https://maven.minecraftforge.net/" }
 	maven { url "https://maven.shedaniel.me/" }
 	mavenCentral()
 }
diff --git a/src/main/java/net/fabricmc/loom/build/JarRemapper.java b/src/main/java/net/fabricmc/loom/build/JarRemapper.java
index 063bb669..6c7f0179 100644
--- a/src/main/java/net/fabricmc/loom/build/JarRemapper.java
+++ b/src/main/java/net/fabricmc/loom/build/JarRemapper.java
@@ -25,6 +25,7 @@
 package net.fabricmc.loom.build;
 
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -106,6 +107,7 @@ public class JarRemapper {
 			project.getLogger().info(":remapper output -> " + data.output.getFileName().toString());
 
 			try {
+				Files.deleteIfExists(data.output);
 				outputConsumer = new OutputConsumerPath.Builder(data.output).build();
 			} catch (Exception e) {
 				throw new RuntimeException("Failed to create remapper output " + data.output.getFileName().toString(), e);
diff --git a/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java b/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java
index ad591f76..a3e7e448 100644
--- a/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java
+++ b/src/main/java/net/fabricmc/loom/configuration/CompileConfiguration.java
@@ -137,6 +137,7 @@ public final class CompileConfiguration {
 		extendsFrom(JavaPlugin.IMPLEMENTATION_CONFIGURATION_NAME, Constants.Configurations.MAPPINGS_FINAL, project);
 
 		extendsFrom(JavaPlugin.RUNTIME_CLASSPATH_CONFIGURATION_NAME, Constants.Configurations.LOOM_DEVELOPMENT_DEPENDENCIES, project);
+		extendsFrom(JavaPlugin.TEST_RUNTIME_CLASSPATH_CONFIGURATION_NAME, Constants.Configurations.LOOM_DEVELOPMENT_DEPENDENCIES, project);
 	}
 
 	public static void configureCompile(Project p) {
diff --git a/src/main/java/net/fabricmc/loom/configuration/MavenConfiguration.java b/src/main/java/net/fabricmc/loom/configuration/MavenConfiguration.java
index 118fd546..dc10e375 100644
--- a/src/main/java/net/fabricmc/loom/configuration/MavenConfiguration.java
+++ b/src/main/java/net/fabricmc/loom/configuration/MavenConfiguration.java
@@ -55,7 +55,7 @@ public class MavenConfiguration {
 
 		project.getRepositories().maven(repo -> {
 			repo.setName("Forge");
-			repo.setUrl("https://files.minecraftforge.net/maven/");
+			repo.setUrl("https://maven.minecraftforge.net/");
 
 			repo.metadataSources(sources -> {
 				sources.mavenPom();
diff --git a/src/main/java/net/fabricmc/loom/configuration/providers/forge/ForgeProvider.java b/src/main/java/net/fabricmc/loom/configuration/providers/forge/ForgeProvider.java
index d1e0d462..80c09be9 100644
--- a/src/main/java/net/fabricmc/loom/configuration/providers/forge/ForgeProvider.java
+++ b/src/main/java/net/fabricmc/loom/configuration/providers/forge/ForgeProvider.java
@@ -40,7 +40,7 @@ public class ForgeProvider extends DependencyProvider {
 
 	@Override
 	public void provide(DependencyInfo dependency, Consumer<Runnable> postPopulationScheduler) throws Exception {
-		version = new ForgeVersion(dependency.getDependency().getVersion());
+		version = new ForgeVersion(dependency.getResolvedVersion());
 		addDependency(dependency.getDepString() + ":userdev", Constants.Configurations.FORGE_USERDEV);
 		addDependency(dependency.getDepString() + ":installer", Constants.Configurations.FORGE_INSTALLER);
 	}
diff --git a/src/main/java/net/fabricmc/loom/util/Constants.java b/src/main/java/net/fabricmc/loom/util/Constants.java
index b9059217..cc33b6fe 100644
--- a/src/main/java/net/fabricmc/loom/util/Constants.java
+++ b/src/main/java/net/fabricmc/loom/util/Constants.java
@@ -111,7 +111,7 @@ public class Constants {
 		 * Constants for versions of dependencies.
 		 */
 		public static final class Versions {
-			public static final String MIXIN_COMPILE_EXTENSIONS = "0.4.0";
+			public static final String MIXIN_COMPILE_EXTENSIONS = "0.4.3";
 			public static final String DEV_LAUNCH_INJECTOR = "0.2.1+build.8";
 			public static final String TERMINAL_CONSOLE_APPENDER = "1.2.0";
 			public static final String JETBRAINS_ANNOTATIONS = "19.0.0";