diff --git a/build.gradle b/build.gradle
index a307b66..984312e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -155,6 +155,7 @@ dependencies {
 	include project(path: ':microdurability-1.20')
 	include project(path: ':microdurability-1.20.5')
 	include project(path: ':microdurability-1.21')
+	include project(path: ':microdurability-1.21.4')
 
 	runtimeOnly project(path: ':microdurability-core', configuration: "namedElements")
 	runtimeOnly project(path: ':microdurability-1.16', configuration: "namedElements")
@@ -164,15 +165,16 @@ dependencies {
 	runtimeOnly project(path: ':microdurability-1.20', configuration: "namedElements")
 	runtimeOnly project(path: ':microdurability-1.20.5', configuration: "namedElements")
 	runtimeOnly project(path: ':microdurability-1.21', configuration: "namedElements")
+	runtimeOnly project(path: ':microdurability-1.21.4', configuration: "namedElements")
 
-	modRuntimeOnly "net.fabricmc.fabric-api:fabric-api:${project.fabric_api_version_1_21}"
-	modRuntimeOnly "com.terraformersmc:modmenu:${project.modmenu_version_1_21}"
-	modRuntimeOnly("me.shedaniel.cloth:cloth-config-fabric:${project.cloth_config_version_1_21}") {
+	modRuntimeOnly "net.fabricmc.fabric-api:fabric-api:${project.fabric_api_version_1_21_4}"
+	modRuntimeOnly "com.terraformersmc:modmenu:${project.modmenu_version_1_21_4}"
+	modRuntimeOnly("me.shedaniel.cloth:cloth-config-fabric:${project.cloth_config_version_1_21_4}") {
 		exclude(group: 'net.fabricmc.fabric-api')
 	}
 
-	minecraft "com.mojang:minecraft:${minecraft_version_1_21}"
-	mappings "net.fabricmc:yarn:${project.yarn_mappings_1_21}:v2"
+	minecraft "com.mojang:minecraft:${minecraft_version_1_21_4}"
+	mappings "net.fabricmc:yarn:${project.yarn_mappings_1_21_4}:v2"
 }
 
 
diff --git a/gradle.properties b/gradle.properties
index db671e8..a7d5f39 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,7 +3,7 @@ org.gradle.jvmargs = -Xmx2G
 org.gradle.parallel = true
 
 # Gradle Plugins
-fabric_loom_version = 1.7-SNAPSHOT
+fabric_loom_version = 1.10-SNAPSHOT
 checkstyle_version = 10.18.+
 spotless_version = 6.25.+
 
@@ -13,7 +13,7 @@ maven_group = com.github.reviversmc
 archives_base_name = microdurability
 
 # Global Dependencies
-fabric_loader_version = 0.16.7
+fabric_loader_version = 0.16.10
 fabric_asm_version = v2.3
 
 # Module Dependencies
@@ -52,6 +52,11 @@ minecraft_version_1_21 = 1.21.1
 yarn_mappings_1_21 = 1.21.1+build.3
 cloth_config_version_1_21 = 15.0.140
 modmenu_version_1_21 = 11.0.3
+# 1.21.4
+minecraft_version_1_21_4 = 1.21.4
+yarn_mappings_1_21_4 = 1.21.4+build.8
+cloth_config_version_1_21_4 = 17.0.144
+modmenu_version_1_21_4 = 13.0.3
 
 # Dev-Env Mods
 use_third_party_mods = true
@@ -124,3 +129,12 @@ ferritecore_version_1_21 = 7.0.1-fabric
 threadtweak_version_1_21 = 0.1.5
 fadeless_version_1_21 = 1.1.1
 double_hotbar_version_1_21 = 1.3.3-mc1.21-fabric
+# 1.21.4
+fabric_api_version_1_21_4 = 0.119.2+1.21.4
+sodium_version_1_21_4 = mc1.21.4-0.6.10-fabric
+lithium_version_1_21_4 = mc1.21.4-0.15.1-fabric
+ferritecore_version_1_21_4 = 7.1.1-fabric
+# threadtweak_version_1_21_4 = 0.1.5
+fadeless_version_1_21_4 = 2.0.2
+midnightlib_version_1_21_4=1.6.6-fabric
+double_hotbar_version_1_21_4 = 1.3.4-mc1.21.2-fabric
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index e644113..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 a441313..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-8.8-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 1aa94a4..faf9300 100755
--- a/gradlew
+++ b/gradlew
@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -84,7 +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 "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+APP_HOME=$( 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
@@ -203,7 +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/gradlew.bat b/gradlew.bat
index 25da30d..9b42019 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -1,92 +1,94 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%"=="" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%"=="" set DIRNAME=.
-@rem This is normally unused
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if %ERRORLEVEL% equ 0 goto execute
-
-echo. 1>&2
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto execute
-
-echo. 1>&2
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
-
-goto fail
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
-
-:end
-@rem End local scope for the variables with windows NT shell
-if %ERRORLEVEL% equ 0 goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-set EXIT_CODE=%ERRORLEVEL%
-if %EXIT_CODE% equ 0 set EXIT_CODE=1
-if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
-exit /b %EXIT_CODE%
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/microdurability-1.21.4/build.gradle b/microdurability-1.21.4/build.gradle
new file mode 100644
index 0000000..ce0ea0f
--- /dev/null
+++ b/microdurability-1.21.4/build.gradle
@@ -0,0 +1,44 @@
+base {
+	archivesName = archivesName.get() + '-compat-1.21.4'
+}
+
+dependencies {
+	api project(path: ':microdurability-1.21', configuration: 'namedElements')
+
+	minecraft "com.mojang:minecraft:${project.minecraft_version_1_21_4}"
+	mappings "net.fabricmc:yarn:${project.yarn_mappings_1_21_4}:v2"
+
+	// Other mods
+	modRuntimeOnly "com.terraformersmc:modmenu:${project.modmenu_version_1_21_4}"
+	modRuntimeOnly("me.shedaniel.cloth:cloth-config-fabric:${project.cloth_config_version_1_21_4}") {
+		exclude(group: 'net.fabricmc.fabric-api')
+	}
+
+
+	if (project.use_third_party_mods == 'true') {
+		// Use full Fabric API bundle while debugging, since transitive deps aren't always declared correctly
+		modRuntimeOnly "net.fabricmc.fabric-api:fabric-api:${project.fabric_api_version_1_21_4}"
+
+		modRuntimeOnly "maven.modrinth:sodium:${project.sodium_version_1_21_4}"
+		modRuntimeOnly "maven.modrinth:lithium:${project.lithium_version_1_21_4}"
+		modRuntimeOnly "maven.modrinth:ferrite-core:${project.ferritecore_version_1_21_4}"
+		// Not currently updated when written
+//		modRuntimeOnly "maven.modrinth:threadtweak:${project.threadtweak_version_1_21_4}"
+		modRuntimeOnly "maven.modrinth:fadeless:${project.fadeless_version_1_21_4}"
+		modRuntimeOnly "maven.modrinth:midnightlib:${project.midnightlib_version_1_21_4}"
+
+		// Comment out the following dependencies to check vanilla compatibility
+		// Not currently updated when written
+//		modRuntimeOnly "maven.modrinth:raised:Fabric-1.21.4-${project.raised_v4_version}"
+		modRuntimeOnly "maven.modrinth:double-hotbar:${project.double_hotbar_version_1_21_4}"
+	}
+}
+
+java {
+	sourceCompatibility = JavaVersion.VERSION_21
+	targetCompatibility = JavaVersion.VERSION_21
+}
+
+tasks.withType(JavaCompile).configureEach {
+	it.options.release = 21
+}
diff --git a/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/MicroDurability1214.java b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/MicroDurability1214.java
new file mode 100644
index 0000000..156c95d
--- /dev/null
+++ b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/MicroDurability1214.java
@@ -0,0 +1,20 @@
+package com.github.reviversmc.microdurability;
+
+import java.util.function.Supplier;
+
+import com.github.reviversmc.microdurability.compat.minecraft.McVersionCompatInitializer;
+import com.github.reviversmc.microdurability.compat.minecraft.McVersionHelper;
+
+public class MicroDurability1214 extends McVersionCompatInitializer {
+	static final Supplier<Boolean> IS_COMPATIBLE = () -> McVersionHelper.isWithin("1.21.4", McVersionHelper.INFINITY);
+
+	@Override
+	public boolean isCompatible() {
+		return IS_COMPATIBLE.get();
+	}
+
+	@Override
+	protected void initialize() {
+		MicroDurability.renderer = new Renderer1214();
+	}
+}
diff --git a/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/MixinProvider1214.java b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/MixinProvider1214.java
new file mode 100644
index 0000000..1cc41ca
--- /dev/null
+++ b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/MixinProvider1214.java
@@ -0,0 +1,16 @@
+package com.github.reviversmc.microdurability;
+
+import java.util.List;
+
+import com.github.reviversmc.microdurability.compat.minecraft.McVersionMixinProvider;
+
+public class MixinProvider1214 extends McVersionMixinProvider {
+	@Override
+	public List<String> getMixins() {
+		if (MicroDurability1214.IS_COMPATIBLE.get()) {
+			return List.of("InGameHudMixin1214");
+		}
+
+		return null;
+	}
+}
diff --git a/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/Renderer1214.java b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/Renderer1214.java
new file mode 100644
index 0000000..8cbc5f5
--- /dev/null
+++ b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/Renderer1214.java
@@ -0,0 +1,18 @@
+package com.github.reviversmc.microdurability;
+
+import net.minecraft.client.gui.DrawContext;
+import net.minecraft.client.render.RenderLayer;
+import net.minecraft.util.math.ColorHelper;
+
+import com.github.reviversmc.microdurability.compat.mods.RaisedCompat;
+
+public class Renderer1214 extends Renderer121 {
+	@Override
+	protected void renderGuiQuad(Object context, int x, int y, int width, int height, int red, int green, int blue, int alpha) {
+		if (RaisedCompat.isInstalled() && !RaisedCompat.isV3OrLater()) {
+			y += getRaisedOffset();
+		}
+
+		((DrawContext) context).fill(RenderLayer.getGuiOverlay(), x, y, x + width, y + height, ColorHelper.getArgb(alpha, red, green, blue));
+	}
+}
diff --git a/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/mixins/InGameHudMixin1214.java b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/mixins/InGameHudMixin1214.java
new file mode 100644
index 0000000..446bf3f
--- /dev/null
+++ b/microdurability-1.21.4/src/main/java/com/github/reviversmc/microdurability/mixins/InGameHudMixin1214.java
@@ -0,0 +1,29 @@
+package com.github.reviversmc.microdurability.mixins;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.minecraft.client.gui.DrawContext;
+import net.minecraft.client.gui.hud.InGameHud;
+import net.minecraft.client.render.RenderTickCounter;
+
+import com.github.reviversmc.microdurability.MicroDurability;
+
+@Mixin(InGameHud.class)
+public class InGameHudMixin1214 {
+	@Shadow
+	private int ticks;
+
+	@Inject(method = "renderHotbar", at = @At("RETURN"))
+	private void renderArmorArea(DrawContext context, RenderTickCounter tickCounter, CallbackInfo callbackInfo) {
+		MicroDurability.renderer.renderArmorArea(context, ticks);
+	}
+
+	@Inject(method = "renderCrosshair", at = @At("RETURN"))
+	private void renderHeldItemExclamationMark(DrawContext context, RenderTickCounter tickCounter, CallbackInfo callbackInfo) {
+		MicroDurability.renderer.renderHeldItemLowDurabilityWarning(context, ticks);
+	}
+}
diff --git a/microdurability-1.21.4/src/main/resources/fabric.mod.json b/microdurability-1.21.4/src/main/resources/fabric.mod.json
new file mode 100644
index 0000000..670ab37
--- /dev/null
+++ b/microdurability-1.21.4/src/main/resources/fabric.mod.json
@@ -0,0 +1,32 @@
+{
+	"schemaVersion": 1,
+	"id": "microdurability-compat-1-21-4",
+	"version": "${version}",
+	"name": "microDurability 1.21.4 Compat",
+	"license": "MPL-2.0",
+	"environment": "client",
+	"entrypoints": {
+		"microdurability": [
+			"com.github.reviversmc.microdurability.MicroDurability1214"
+		],
+		"modmenu": [
+			"com.github.reviversmc.microdurability.compat.mods.ModMenuIntegration"
+		]
+	},
+	"mixins": [
+		"microdurability1214.mixins.json"
+	],
+	"depends": {
+		"fabricloader": ">=0.12.9",
+		"minecraft": ">=1.21.4",
+		"microdurability-compat-1-20-5": "*"
+	},
+	"custom": {
+		"modmenu": {
+			"badges": ["library"],
+			"parent": {
+				"id": "microdurability"
+			}
+		}
+	}
+}
diff --git a/microdurability-1.21.4/src/main/resources/microdurability1214.mixins.json b/microdurability-1.21.4/src/main/resources/microdurability1214.mixins.json
new file mode 100644
index 0000000..f27d9f3
--- /dev/null
+++ b/microdurability-1.21.4/src/main/resources/microdurability1214.mixins.json
@@ -0,0 +1,9 @@
+{
+	"required": true,
+	"package": "com.github.reviversmc.microdurability.mixins",
+	"compatibilityLevel": "JAVA_21",
+	"plugin": "com.github.reviversmc.microdurability.MixinProvider1214",
+	"injectors": {
+		"defaultRequire": 1
+	}
+}
diff --git a/microdurability-1.21/src/main/java/com/github/reviversmc/microdurability/MicroDurability121.java b/microdurability-1.21/src/main/java/com/github/reviversmc/microdurability/MicroDurability121.java
index 27e099c..5af74bd 100644
--- a/microdurability-1.21/src/main/java/com/github/reviversmc/microdurability/MicroDurability121.java
+++ b/microdurability-1.21/src/main/java/com/github/reviversmc/microdurability/MicroDurability121.java
@@ -6,7 +6,7 @@
 import com.github.reviversmc.microdurability.compat.minecraft.McVersionHelper;
 
 public class MicroDurability121 extends McVersionCompatInitializer {
-	static final Supplier<Boolean> IS_COMPATIBLE = () -> McVersionHelper.isWithin("1.21", McVersionHelper.INFINITY);
+	static final Supplier<Boolean> IS_COMPATIBLE = () -> McVersionHelper.isWithin("1.21", "1.21.3");
 
 	@Override
 	public boolean isCompatible() {
diff --git a/settings.gradle b/settings.gradle
index 75ab8ea..f07aef0 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -23,4 +23,5 @@ include 'microdurability-1.19.4'
 include 'microdurability-1.20'
 include 'microdurability-1.20.5'
 include 'microdurability-1.21'
+include 'microdurability-1.21.4'
 include 'microdurability-dev-env-extras'