diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index eb126669b..63d5f8b21 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -27,7 +27,7 @@ nightConfig = "3.6.5"
 slf4j = "1.7.36"
 
 # Minecraft mods
-forgeConfig = "4.2.7"
+forgeConfig = "4.2.9"
 iris = "1.19.3-v1.4.6"
 jei = "11.3.0.262"
 modmenu = "5.0.1"
diff --git a/projects/fabric/build.gradle.kts b/projects/fabric/build.gradle.kts
index 93fceab4d..20ac8b5f6 100644
--- a/projects/fabric/build.gradle.kts
+++ b/projects/fabric/build.gradle.kts
@@ -35,9 +35,7 @@ addRemappedConfiguration("testWithSodium")
 addRemappedConfiguration("testWithIris")
 
 dependencies {
-    modImplementation(libs.bundles.externalMods.fabric) {
-        exclude("curse.maven", "configured-fabric-667378") // Added by Forge Config API
-    }
+    modImplementation(libs.bundles.externalMods.fabric)
     modCompileOnly(libs.bundles.externalMods.fabric.compile) {
         exclude("net.fabricmc", "fabric-loader")
         exclude("net.fabricmc.fabric-api")
@@ -238,6 +236,7 @@ publishing {
             mavenDependencies {
                 exclude(dependencies.create("cc.tweaked:"))
                 exclude(libs.jei.fabric.get())
+                exclude(libs.modmenu.get())
             }
         }
     }
diff --git a/projects/fabric/src/main/java/dan200/computercraft/shared/platform/PlatformHelperImpl.java b/projects/fabric/src/main/java/dan200/computercraft/shared/platform/PlatformHelperImpl.java
index 72e2994ea..26be6593e 100644
--- a/projects/fabric/src/main/java/dan200/computercraft/shared/platform/PlatformHelperImpl.java
+++ b/projects/fabric/src/main/java/dan200/computercraft/shared/platform/PlatformHelperImpl.java
@@ -25,6 +25,7 @@
 import net.fabricmc.fabric.api.lookup.v1.block.BlockApiCache;
 import net.fabricmc.fabric.api.lookup.v1.block.BlockApiLookup;
 import net.fabricmc.fabric.api.object.builder.v1.block.entity.FabricBlockEntityTypeBuilder;
+import net.fabricmc.fabric.api.registry.FuelRegistry;
 import net.fabricmc.fabric.api.screenhandler.v1.ExtendedScreenHandlerFactory;
 import net.fabricmc.fabric.api.screenhandler.v1.ExtendedScreenHandlerType;
 import net.fabricmc.fabric.api.tag.convention.v1.ConventionalItemTags;
@@ -60,7 +61,6 @@
 import net.minecraft.world.item.crafting.Recipe;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.Block;
-import net.minecraft.world.level.block.entity.AbstractFurnaceBlockEntity;
 import net.minecraft.world.level.block.entity.BlockEntity;
 import net.minecraft.world.level.block.entity.BlockEntityType;
 import net.minecraft.world.level.block.state.BlockState;
@@ -242,7 +242,7 @@ public List<TagKey<Item>> getDyeTags() {
 
     @Override
     public int getBurnTime(ItemStack stack) {
-        return AbstractFurnaceBlockEntity.getFuel().getOrDefault(stack.getItem(), 0);
+        return FuelRegistry.INSTANCE.get(stack.getItem());
     }
 
     @Nullable
diff --git a/projects/forge/build.gradle.kts b/projects/forge/build.gradle.kts
index c67f0b945..1d7469252 100644
--- a/projects/forge/build.gradle.kts
+++ b/projects/forge/build.gradle.kts
@@ -115,8 +115,8 @@ minecraft {
 }
 
 mixin {
-    add(sourceSets.main.get(), "computercraft.mixins.refmap.json")
-    add(sourceSets.client.get(), "computercraft-client.mixins.refmap.json")
+    add(sourceSets.main.get(), "computercraft.refmap.json")
+    add(sourceSets.client.get(), "client-computercraft.refmap.json")
 
     config("computercraft.mixins.json")
     config("computercraft-client.mixins.json")
@@ -133,6 +133,7 @@ configurations {
 
 dependencies {
     annotationProcessor("org.spongepowered:mixin:0.8.5-SQUID:processor")
+    clientAnnotationProcessor("org.spongepowered:mixin:0.8.5-SQUID:processor")
 
     compileOnly(libs.jetbrainsAnnotations)
     annotationProcessorEverywhere(libs.autoService)
@@ -219,13 +220,15 @@ tasks.shadowJar {
     finalizedBy("reobfShadowJar")
     archiveClassifier.set("")
 
+    from(sourceSets.client.get().output)
+
     dependencies {
         include(dependency("cc.tweaked:"))
         include(dependency(libs.cobalt.get()))
         include(dependency(libs.netty.http.get()))
     }
     relocate("org.squiddev.cobalt", "cc.tweaked.internal.cobalt")
-    relocate("io.netty.handler", "cc.tweaked.internal.netty")
+    relocate("io.netty.handler.codec.http", "cc.tweaked.internal.netty.codec.http")
     minimize()
 }
 
diff --git a/projects/forge/src/client/resources/computercraft-client.forge.mixins.json b/projects/forge/src/client/resources/computercraft-client.forge.mixins.json
index 3088dc5d5..fa8e7abed 100644
--- a/projects/forge/src/client/resources/computercraft-client.forge.mixins.json
+++ b/projects/forge/src/client/resources/computercraft-client.forge.mixins.json
@@ -1,13 +1,13 @@
 {
-    "minVersion": "0.8",
     "required": true,
-    "compatibilityLevel": "JAVA_17",
-    "refmap": "computercraft.mixins.refmap.json",
     "package": "dan200.computercraft.mixin.client",
+    "minVersion": "0.8",
+    "compatibilityLevel": "JAVA_17",
+    "injectors": {
+        "defaultRequire": 1
+    },
     "client": [
         "BlockRenderDispatcherMixin"
     ],
-    "injectors": {
-        "defaultRequire": 1
-    }
+    "refmap": "client-computercraft.refmap.json"
 }