diff --git a/minecraft/src/main/java/org/quiltmc/loader/impl/game/minecraft/Slf4jLogHandler.java b/minecraft/src/main/java/org/quiltmc/loader/impl/game/minecraft/Slf4jLogHandler.java
index fd174a157..2bf9fd4e1 100644
--- a/minecraft/src/main/java/org/quiltmc/loader/impl/game/minecraft/Slf4jLogHandler.java
+++ b/minecraft/src/main/java/org/quiltmc/loader/impl/game/minecraft/Slf4jLogHandler.java
@@ -16,6 +16,8 @@
 
 package org.quiltmc.loader.impl.game.minecraft;
 
+import org.quiltmc.loader.impl.util.QuiltLoaderInternal;
+import org.quiltmc.loader.impl.util.QuiltLoaderInternalType;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -24,7 +26,7 @@
 import org.quiltmc.loader.impl.util.log.LogHandler;
 import org.quiltmc.loader.impl.util.log.LogLevel;
 
-
+@QuiltLoaderInternal(QuiltLoaderInternalType.LEGACY_NO_WARN)
 public final class Slf4jLogHandler implements LogHandler {
 	@Override
 	public boolean shouldLog(LogLevel level, LogCategory category) {
diff --git a/src/main/java/org/quiltmc/loader/api/plugin/ModMetadataExt.java b/src/main/java/org/quiltmc/loader/api/plugin/ModMetadataExt.java
index 531c3a241..6ec1226d9 100644
--- a/src/main/java/org/quiltmc/loader/api/plugin/ModMetadataExt.java
+++ b/src/main/java/org/quiltmc/loader/api/plugin/ModMetadataExt.java
@@ -58,6 +58,7 @@ default ModLoadType loadType() {
 	@Nullable
 	ModPlugin plugin();
 
+	@QuiltLoaderInternal(QuiltLoaderInternalType.PLUGIN_API)
 	public enum ModLoadType {
 		ALWAYS,
 		IF_POSSIBLE,
diff --git a/src/main/java/org/quiltmc/loader/impl/game/GameProvider.java b/src/main/java/org/quiltmc/loader/impl/game/GameProvider.java
index c0cb54c46..fabeab8c1 100644
--- a/src/main/java/org/quiltmc/loader/impl/game/GameProvider.java
+++ b/src/main/java/org/quiltmc/loader/impl/game/GameProvider.java
@@ -71,6 +71,7 @@ default boolean hasAwtSupport() {
 		return LoaderUtil.hasAwtSupport();
 	}
 
+	@QuiltLoaderInternal(QuiltLoaderInternalType.LEGACY_EXPOSED)
 	class BuiltinMod {
 		public BuiltinMod(List<Path> paths, InternalModMetadata metadata) {
 			Objects.requireNonNull(paths, "null paths");