diff --git a/build.gradle b/build.gradle
index 9fc84cd..e3da84f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 plugins {
-    id 'fabric-loom' version '1.7-SNAPSHOT'
+    id 'fabric-loom' version '1.10-SNAPSHOT'
     id 'maven-publish'
 }
 
diff --git a/gradle.properties b/gradle.properties
index 33d69be..a4b4d50 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,9 +3,9 @@ org.gradle.jvmargs=-Xmx1G
 org.gradle.parallel=true
 
 # Fabric Properties
-minecraft_version=1.21
-yarn_mappings=1.21+build.9
-loader_version=0.15.11
+minecraft_version=1.21.5
+yarn_mappings=1.21.5+build.1
+loader_version=0.16.13
 
 # Mod Properties
 mod_version = 0.1.3
@@ -13,4 +13,4 @@ maven_group = xyz.twokilohertz
 archives_base_name = HotbarReplace
 
 # Dependencies
-fabric_version=0.100.7+1.21
+fabric_version=0.121.0+1.21.5
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 2c35211..9bbc975 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 09523c0..37f853b 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index f5feea6..faf9300 100755
--- a/gradlew
+++ b/gradlew
@@ -86,8 +86,7 @@ done
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
-' "$PWD" ) || exit
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -206,7 +205,7 @@ fi
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 #     and any embedded shellness will be escaped.
 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 #     treated as '${Hostname}' itself on the command line.
diff --git a/src/client/java/xyz/twokilohertz/HotbarReplace.java b/src/client/java/xyz/twokilohertz/HotbarReplace.java
index 333fda7..0bfaac1 100644
--- a/src/client/java/xyz/twokilohertz/HotbarReplace.java
+++ b/src/client/java/xyz/twokilohertz/HotbarReplace.java
@@ -65,7 +65,7 @@ public class HotbarReplace implements ClientModInitializer {
 
                     scheduler.schedule(() -> {
                         client.interactionManager.clickSlot(player.currentScreenHandler.syncId,
-                                inventory.selectedSlot + PlayerInventory.MAIN_SIZE, GLFW.GLFW_MOUSE_BUTTON_1,
+                                inventory.getSelectedSlot() + PlayerInventory.MAIN_SIZE, GLFW.GLFW_MOUSE_BUTTON_1,
                                 SlotActionType.PICKUP, player);
                     }, click_delay, TimeUnit.MILLISECONDS);
                 }
diff --git a/src/client/java/xyz/twokilohertz/mixin/BlockItemMixin.java b/src/client/java/xyz/twokilohertz/mixin/BlockItemMixin.java
index 9bc8121..faa746e 100644
--- a/src/client/java/xyz/twokilohertz/mixin/BlockItemMixin.java
+++ b/src/client/java/xyz/twokilohertz/mixin/BlockItemMixin.java
@@ -20,7 +20,7 @@ public class BlockItemMixin {
     }
 
     @Inject(at = @At("TAIL"), method = "Lnet/minecraft/item/BlockItem;place(Lnet/minecraft/item/ItemPlacementContext;)Lnet/minecraft/util/ActionResult;")
-    private void mixin_BlockItem_place_tail(ItemPlacementContext context, CallbackInfoReturnable<ActionResult> info) {
+    private void BlockItem_place_tail(ItemPlacementContext context, CallbackInfoReturnable<ActionResult> info) {
         // Early return if the block place action would fail
         if (info.getReturnValue() != ActionResult.SUCCESS)
             return;