diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/ConnectedModelMixin.java b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/ConnectedModelMixin.java
new file mode 100644
index 00000000..913205c3
--- /dev/null
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/ConnectedModelMixin.java
@@ -0,0 +1,24 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.mantle_model_cme;
+
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.embeddedt.modernfix.annotation.RequiresMod;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Pseudo;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Pseudo
+@Mixin(targets = { "slimeknights/mantle/client/model/connected/ConnectedModel$Baked" }, remap = false)
+@RequiresMod("mantle")
+@ClientOnlyMixin
+public class ConnectedModelMixin {
+    @SuppressWarnings("unused")
+    @Shadow
+    @Final
+    @Mutable
+    private final Map<String, String> nameMappingCache = new ConcurrentHashMap<>();
+}
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/FluidTextureModelLoaderMixin.java b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/FluidTextureModelLoaderMixin.java
new file mode 100644
index 00000000..018369dd
--- /dev/null
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/FluidTextureModelLoaderMixin.java
@@ -0,0 +1,24 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.mantle_model_cme;
+
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.embeddedt.modernfix.annotation.RequiresMod;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Pseudo;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@Pseudo
+@Mixin(targets = { "slimeknights/mantle/client/model/fluid/FluidTextureModel$Loader" }, remap = false)
+@RequiresMod("mantle")
+@ClientOnlyMixin
+public class FluidTextureModelLoaderMixin {
+    @SuppressWarnings("unused")
+    @Shadow
+    @Final
+    @Mutable
+    private final Map<?, ?> modelCache = new ConcurrentHashMap<>();
+}
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/RetexturedModelBakedMixin.java b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/RetexturedModelBakedMixin.java
new file mode 100644
index 00000000..69a1b90e
--- /dev/null
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/bugfix/mantle_model_cme/RetexturedModelBakedMixin.java
@@ -0,0 +1,29 @@
+package org.embeddedt.modernfix.forge.mixin.bugfix.mantle_model_cme;
+
+import net.minecraft.client.resources.model.BakedModel;
+import net.minecraft.resources.ResourceLocation;
+import org.embeddedt.modernfix.annotation.ClientOnlyMixin;
+import org.embeddedt.modernfix.annotation.RequiresMod;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Mutable;
+import org.spongepowered.asm.mixin.Pseudo;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Fix ConcurrentModificationException from Mantle models by making the cache thread-safe.
+ */
+@Pseudo
+@Mixin(targets = { "slimeknights/mantle/client/model/RetexturedModel$BakedModel" }, remap = false)
+@RequiresMod("mantle")
+@ClientOnlyMixin
+public class RetexturedModelBakedMixin {
+    @SuppressWarnings("unused")
+    @Shadow
+    @Final
+    @Mutable
+    private final Map<ResourceLocation, BakedModel> cache = new ConcurrentHashMap<>();
+}