diff --git a/README.md b/README.md
index 338ffabf..3075c523 100644
--- a/README.md
+++ b/README.md
@@ -107,6 +107,7 @@ It should work fine with most if not all mods and modpacks.
 Known incompatibilities:
 
 - OptiFabric
+- VulkanMod
 
 If you encounter any issues, please report them on the [Issue Tracker](https://github.com/RaphiMC/ImmediatelyFast/issues).
 
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index 38c84145..550f1cba 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -39,7 +39,8 @@
     "slight-gui-modifications": "*"
   },
   "breaks": {
-    "optifabric": "*"
+    "optifabric": "*",
+    "vulkanmod": "*"
   },
   "custom": {
     "modmenu": {