diff --git a/build.gradle.kts b/build.gradle.kts
index 7e00deefb..043d77a38 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,10 +8,10 @@ plugins {
 
 // Fabric: https://fabricmc.net/develop/
 // Neoforge: https://neoforged.net/
-val MINECRAFT_VERSION by extra { "1.21.3" }
-val NEOFORGE_VERSION by extra { "21.3.40-beta" }
+val MINECRAFT_VERSION by extra { "1.21.4" }
+val NEOFORGE_VERSION by extra { "21.4.0-beta" }
 val FABRIC_LOADER_VERSION by extra { "0.16.9" }
-val FABRIC_API_VERSION by extra { "0.107.3+1.21.3" }
+val FABRIC_API_VERSION by extra { "0.110.5+1.21.4" }
 
 // This value can be set to null to disable Parchment.
 // TODO: Add Parchment
diff --git a/common/src/main/java/net/caffeinemc/mods/lithium/mixin/world/block_entity_ticking/sleeping/furnace/AbstractFurnaceBlockEntityMixin.java b/common/src/main/java/net/caffeinemc/mods/lithium/mixin/world/block_entity_ticking/sleeping/furnace/AbstractFurnaceBlockEntityMixin.java
index 6530b99d9..7152445c0 100644
--- a/common/src/main/java/net/caffeinemc/mods/lithium/mixin/world/block_entity_ticking/sleeping/furnace/AbstractFurnaceBlockEntityMixin.java
+++ b/common/src/main/java/net/caffeinemc/mods/lithium/mixin/world/block_entity_ticking/sleeping/furnace/AbstractFurnaceBlockEntityMixin.java
@@ -24,7 +24,7 @@ public abstract class AbstractFurnaceBlockEntityMixin extends BlockEntity implem
     protected abstract boolean isLit();
 
     @Shadow
-    int cookingProgress;
+    int cookingTimer;
     private WrappedBlockEntityTickInvokerAccessor tickWrapper = null;
     private TickingBlockEntity sleepingTicker = null;
 
@@ -59,7 +59,7 @@ private static void checkSleep(ServerLevel serverLevel, BlockPos blockPos, Block
     }
 
     private void checkSleep(BlockState state) {
-        if (!this.isLit() && this.cookingProgress == 0 && (state.is(Blocks.FURNACE) || state.is(Blocks.BLAST_FURNACE) || state.is(Blocks.SMOKER)) && this.level != null) {
+        if (!this.isLit() && this.cookingTimer == 0 && (state.is(Blocks.FURNACE) || state.is(Blocks.BLAST_FURNACE) || state.is(Blocks.SMOKER)) && this.level != null) {
             this.lithium$startSleeping();
         }
     }
diff --git a/fabric/src/main/resources/fabric.mod.json b/fabric/src/main/resources/fabric.mod.json
index c707b4e9c..a36e6989e 100644
--- a/fabric/src/main/resources/fabric.mod.json
+++ b/fabric/src/main/resources/fabric.mod.json
@@ -28,10 +28,7 @@
     "accessWidener": "lithium.accesswidener",
     "depends": {
       "fabricloader": ">=0.15.1",
-      "minecraft" : [
-        "1.21.2",
-        "1.21.3"
-      ]
+      "minecraft" : "1.21.4"
     },
     "breaks": {
         "optifabric": "*"
diff --git a/neoforge/src/main/resources/META-INF/neoforge.mods.toml b/neoforge/src/main/resources/META-INF/neoforge.mods.toml
index 00fcbadf2..e9f3c918f 100644
--- a/neoforge/src/main/resources/META-INF/neoforge.mods.toml
+++ b/neoforge/src/main/resources/META-INF/neoforge.mods.toml
@@ -23,7 +23,7 @@ Lithium is a free and open-source optimization mod for Minecraft which makes a w
 [[dependencies.lithium]]
 modId = "minecraft"
 type = "required"
-versionRange = "[1.21.2,1.21.3]"
+versionRange = "1.21.4"
 ordering = "NONE"
 side = "BOTH"