diff --git a/src/main/java/com/gtnewhorizons/postea/api/BlockReplacementManager.java b/src/main/java/com/gtnewhorizons/postea/api/BlockReplacementManager.java
index 570026b..027008a 100644
--- a/src/main/java/com/gtnewhorizons/postea/api/BlockReplacementManager.java
+++ b/src/main/java/com/gtnewhorizons/postea/api/BlockReplacementManager.java
@@ -1,13 +1,11 @@
 package com.gtnewhorizons.postea.api;
 
-import java.util.function.BiFunction;
 import java.util.function.Consumer;
 import java.util.function.Function;
 
 import javax.annotation.Nonnull;
 
 import net.minecraft.block.Block;
-import net.minecraft.world.World;
 import net.minecraftforge.oredict.OreDictionary;
 
 import com.gtnewhorizons.postea.utility.BlockConversionInfo;
@@ -25,40 +23,6 @@ public abstract class BlockReplacementManager {
 
     // region custom transformer registration
 
-    /**
-     * Adds a custom transformer for a given id.
-     *
-     * @deprecated Use {@link #addTransformationHandler(String, Function)}
-     *
-     * @apiNote When the transformer function passed to this function returns a null, value Postea will assume that
-     *          the transformer has failed to identify and run the handler on any other handler function registered
-     *          to the given ID.
-     *          <br>
-     *          If you need to perform a simple transformations consider using the following methods instead:
-     *          <ul>
-     *          <li>block -> block (with same meta): {@link #addSimpleReplacement(String, Block)}</li>
-     *          <li>block -> block with specific meta: {@link #addSimpleReplacement(String, Block, int)}</li>
-     *          <li>block with meta -> block (with same meta): {@link #addSimpleReplacement(String, int, Block)}</li>
-     *          <li>block with meta -> block with specific meta:
-     *          {@link #addSimpleReplacement(String, int, Block, int)}</li>
-     *          </ul>
-     *
-     * @implNote For performance reasons, Postea assumes that the BlockConversionInfo that was passed to the handler
-     *           hasn't been modified if you return a null value. This isn't enforced though since returning a null
-     *           value after doing some modifications has a couple niche uses. eg: having separate handlers for
-     *           different migrations of a single thing that can be sunset at different times down the line.
-     *
-     * @param originalId  The id of the block to transform.
-     * @param transformer The transformer to apply.
-     */
-    @Deprecated
-    @SuppressWarnings("unused")
-    public static void addBlockReplacement(String originalId,
-        BiFunction<BlockConversionInfo, World, BlockConversionInfo> transformer) {
-        if (transformer == null) throw new IllegalArgumentException("transformer is null");
-        addTransformationHandler(originalId, info -> transformer.apply(info, info.world) != null);
-    }
-
     /**
      * Adds a custom transformer for a given id.
      *
diff --git a/src/main/java/com/gtnewhorizons/postea/api/ItemStackReplacementManager.java b/src/main/java/com/gtnewhorizons/postea/api/ItemStackReplacementManager.java
index 250473c..51a0063 100644
--- a/src/main/java/com/gtnewhorizons/postea/api/ItemStackReplacementManager.java
+++ b/src/main/java/com/gtnewhorizons/postea/api/ItemStackReplacementManager.java
@@ -2,7 +2,6 @@ package com.gtnewhorizons.postea.api;
 
 import java.util.function.BiFunction;
 import java.util.function.Consumer;
-import java.util.function.Function;
 
 import javax.annotation.Nonnull;
 
@@ -28,40 +27,6 @@ public abstract class ItemStackReplacementManager {
 
     // region custom transformer registration
 
-    /**
-     * Adds a custom transformer for a given id.
-     *
-     * @deprecated Use {@link #addTransformationHandler(String, BiFunction)} instead.
-     *
-     * @apiNote When the transformer function passed to this function returns a null, value Postea will assume that
-     *          the transformer has failed to identify and run the handler on any other handler function registered
-     *          to the given ID.
-     *          <p>
-     *          If you need to perform a simple transformations consider using the following methods instead:
-     *          <ul>
-     *          <li>item -> item (with same meta): {@link #addSimpleReplacement(String, Item)}</li>
-     *          <li>item -> item with specific meta: {@link #addSimpleReplacement(String, Item, int)}</li>
-     *          <li>item with meta -> item (with same meta): {@link #addSimpleReplacement(String, int, Item)}</li>
-     *          <li>item with meta -> item with specific meta:
-     *          {@link #addSimpleReplacement(String, int, Item, int)}</li>
-     *          </ul>
-     *
-     * @implNote For performance reasons, Postea assumes that the tag that was passed to the handler hasn't been
-     *           modified
-     *           if you return a null value. This isn't enforced though since returning a null value after doing some
-     *           modifications has a couple niche uses. eg: having separate handlers for different migrations of a
-     *           single thing that can be sunset at different times down the line.
-     *
-     * @param originalId  The id of the item to transform.
-     * @param transformer The transformer to apply.
-     */
-    @Deprecated
-    @SuppressWarnings("unused")
-    public static void addItemReplacement(String originalId, Function<NBTTagCompound, NBTTagCompound> transformer) {
-        if (transformer == null) throw new IllegalArgumentException("transformer is null");
-        addTransformationHandler(originalId, (_originalId, tag) -> transformer.apply(tag) != null);
-    }
-
     /**
      * Adds a custom transformer for a given id.
      *
diff --git a/src/main/java/com/gtnewhorizons/postea/api/TileEntityReplacementManager.java b/src/main/java/com/gtnewhorizons/postea/api/TileEntityReplacementManager.java
index bcad3ec..4169700 100644
--- a/src/main/java/com/gtnewhorizons/postea/api/TileEntityReplacementManager.java
+++ b/src/main/java/com/gtnewhorizons/postea/api/TileEntityReplacementManager.java
@@ -1,6 +1,5 @@
 package com.gtnewhorizons.postea.api;
 
-import java.util.function.BiFunction;
 import java.util.function.Consumer;
 
 import net.minecraft.nbt.NBTTagCompound;
@@ -19,16 +18,6 @@ import com.gtnewhorizons.postea.utility.TransformerRegistry;
 @SuppressWarnings("unused")
 public abstract class TileEntityReplacementManager {
 
-    /**
-     * @deprecated Superseded by {@link #tileEntityTransformer(String, TriFunction)}.
-     */
-    @Deprecated
-    public static void tileEntityTransformer(String tileEntityId,
-        BiFunction<NBTTagCompound, World, BlockInfo> transformerFunction) {
-        if (transformerFunction == null) throw new NullPointerException("transformer is null");
-        tileEntityTransformer(tileEntityId, (tag, world, chunk) -> transformerFunction.apply(tag, world));
-    }
-
     /**
      * Register a callback function to transform a tile entity before it's loaded.
      * Callback returns a {@link BlockInfo} which the tile entity will be transformed into.