diff --git a/versions/1.21.4/src/main/java/org/saturnclient/saturnclient/mixin/MinecraftClientMixin.java b/versions/1.21.4/src/main/java/org/saturnclient/saturnclient/mixin/MinecraftClientMixin.java
new file mode 100644
index 0000000..d47f259
--- /dev/null
+++ b/versions/1.21.4/src/main/java/org/saturnclient/saturnclient/mixin/MinecraftClientMixin.java
@@ -0,0 +1,36 @@
+package org.saturnclient.saturnclient.mixin;
+
+import java.io.File;
+import java.io.InputStream;
+
+import org.saturnclient.common.minecraft.IMinecraftClient;
+import org.saturnclient.common.minecraft.bindings.SaturnIdentifier;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.resource.ReloadableResourceManagerImpl;
+import net.minecraft.util.Identifier;
+
+@Mixin(MinecraftClient.class)
+public class MinecraftClientMixin implements IMinecraftClient {
+    @Shadow
+    public File runDirectory;
+
+    @Shadow
+    public ReloadableResourceManagerImpl resourceManager;
+
+    @Override
+    public File getRunDirectory() {
+        return runDirectory;
+    }
+
+    @Override
+    public InputStream getResource(SaturnIdentifier identifier) {
+        try {
+            return resourceManager.getResource((Identifier) identifier.inner).get().getInputStream();
+        } catch (Exception e) {
+            return null;
+        }
+    }
+}
diff --git a/versions/1.21.4/src/main/resources/saturnclient.mixins.json b/versions/1.21.4/src/main/resources/saturnclient.mixins.json
index 3bc9ccc..b7aa28a 100644
--- a/versions/1.21.4/src/main/resources/saturnclient.mixins.json
+++ b/versions/1.21.4/src/main/resources/saturnclient.mixins.json
@@ -10,7 +10,8 @@
     "WhoAmI",
     "DrawContextAccessor",
     "SplashOverlayMixin",
-    "SetScreenMixin"
+    "SetScreenMixin",
+    "MinecraftClientMixin"
   ],
   "injectors": {
     "defaultRequire": 1