diff --git a/buildSrc/src/main/kotlin/CommonJavaConfig.kt b/buildSrc/src/main/kotlin/CommonJavaConfig.kt
index 031b1fd9dc..52a56116ac 100644
--- a/buildSrc/src/main/kotlin/CommonJavaConfig.kt
+++ b/buildSrc/src/main/kotlin/CommonJavaConfig.kt
@@ -32,7 +32,7 @@ fun Project.applyCommonJavaConfiguration(sourcesJar: Boolean, banSlf4j: Boolean
 
     configure<CheckstyleExtension> {
         configFile = rootProject.file("config/checkstyle/checkstyle.xml")
-        toolVersion = "8.34"
+        toolVersion = "9.1"
     }
 
     tasks.withType<Test>().configureEach {
diff --git a/worldedit-core/src/main/java/com/sk89q/jnbt/CompoundTag.java b/worldedit-core/src/main/java/com/sk89q/jnbt/CompoundTag.java
index 247d6eaee8..c4241c36a8 100644
--- a/worldedit-core/src/main/java/com/sk89q/jnbt/CompoundTag.java
+++ b/worldedit-core/src/main/java/com/sk89q/jnbt/CompoundTag.java
@@ -243,8 +243,8 @@ public ListTag getListTag(String key) {
      *
      * @param key the key
      * @param listType the class of the contained type
-     * @return a list of tags
      * @param <T> the type of list
+     * @return a list of tags
      */
     @SuppressWarnings("unchecked")
     public <T extends Tag> List<T> getList(String key, Class<T> listType) {
diff --git a/worldedit-core/src/main/java/com/sk89q/jnbt/ListTag.java b/worldedit-core/src/main/java/com/sk89q/jnbt/ListTag.java
index 15bc76afb7..738017674d 100644
--- a/worldedit-core/src/main/java/com/sk89q/jnbt/ListTag.java
+++ b/worldedit-core/src/main/java/com/sk89q/jnbt/ListTag.java
@@ -301,8 +301,8 @@ public ListTag getListTag(int index) {
      *
      * @param index the index
      * @param listType the class of the contained type
-     * @return a list of tags
      * @param <T> the NBT type
+     * @return a list of tags
      */
     @SuppressWarnings("unchecked")
     public <T extends Tag> List<T> getList(int index, Class<T> listType) {
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java b/worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java
index d58e2f9a25..2538fb02e7 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/LocalSession.java
@@ -671,13 +671,14 @@ public Tool getTool(ItemType item) {
 
     /**
      * Get the brush tool assigned to the item. If there is no tool assigned
-     * or the tool is not assigned, the slot will be replaced with the
+     * or the tool is not a brush tool, the slot will be replaced with the
      * brush tool.
      *
      * @param item the item type
      * @return the tool, or {@code null}
      * @throws InvalidToolBindException if the item can't be bound to that item
      */
+    @Deprecated
     public BrushTool getBrushTool(ItemType item) throws InvalidToolBindException {
         Tool tool = getTool(item);
 
@@ -689,6 +690,17 @@ public BrushTool getBrushTool(ItemType item) throws InvalidToolBindException {
         return (BrushTool) tool;
     }
 
+    /**
+     * Get the brush tool assigned to this item.
+     *
+     * @param item the item type
+     * @return the brush tool assigned to the item type
+     */
+    @Nullable
+    public BrushTool getBrush(ItemType item) {
+        return getTool(item) instanceof BrushTool tool ? tool : null;
+    }
+
     /**
      * Set the tool.
      *
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/BlockTool.java b/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/BlockTool.java
index 1579bb37ec..a1c17c19cf 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/BlockTool.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/BlockTool.java
@@ -36,9 +36,8 @@ public interface BlockTool extends Tool {
      * Perform the primary action of this tool.
      *
      * @return true to cancel the original event which triggered this action (if possible)
-     * @deprecated New subclasses should override
-     * {@link #actPrimary(Platform, LocalConfiguration, Player, LocalSession, Location, Direction)}
-     *      instead
+     * @deprecated New subclasses should override {@link #actPrimary(Platform, LocalConfiguration, Player, LocalSession,
+     *     Location, Direction)} instead
      */
     @Deprecated
     default boolean actPrimary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/DoubleActionBlockTool.java b/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/DoubleActionBlockTool.java
index 7efca8220d..6b5abdf58d 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/DoubleActionBlockTool.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/command/tool/DoubleActionBlockTool.java
@@ -39,9 +39,8 @@ public interface DoubleActionBlockTool extends BlockTool {
      * Perform the secondary action of this block tool.
      *
      * @return true to cancel the original event which triggered this action (if possible)
-     * @deprecated New subclasses must override
-     * {@link #actSecondary(Platform, LocalConfiguration, Player, LocalSession, Location, Direction)}
-     *      instead
+     * @deprecated New subclasses must override {@link #actSecondary(Platform, LocalConfiguration, Player, LocalSession,
+     *     Location, Direction)} instead
      */
     @Deprecated
     default boolean actSecondary(Platform server, LocalConfiguration config, Player player, LocalSession session, Location clicked) {
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/entity/Player.java b/worldedit-core/src/main/java/com/sk89q/worldedit/entity/Player.java
index 2e66eb3a38..da435da12b 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/entity/Player.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/entity/Player.java
@@ -284,8 +284,7 @@ default Location getBlockIn() {
      * @param pos where to move them
      * @param pitch the pitch (up/down) of the player's view in degrees
      * @param yaw the yaw (left/right) of the player's view in degrees
-     * @deprecated This method may fail without indication. Use
-     * {@link #trySetPosition(Vector3, float, float)} instead
+     * @deprecated This method may fail without indication. Use {@link #trySetPosition(Vector3, float, float)} instead
      */
     @Deprecated
     default void setPosition(Vector3 pos, float pitch, float yaw) {
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/util/asset/AssetLoaders.java b/worldedit-core/src/main/java/com/sk89q/worldedit/util/asset/AssetLoaders.java
index 3aedd4ed3b..249a443fd0 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/util/asset/AssetLoaders.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/util/asset/AssetLoaders.java
@@ -132,9 +132,8 @@ public <T> Optional<AssetLoader<T>> getAssetLoader(Class<T> assetClass, String f
      * Get the Asset Loaders for the given type.
      *
      * @param assetClass The class to get the loaders of
-     * @return The list of asset loaders
-     *
      * @param <T> The asset type
+     * @return The list of asset loaders
      */
     @SuppressWarnings("unchecked")
     public <T> List<AssetLoader<T>> getAssetLoaders(Class<T> assetClass) {