diff --git a/build_forge.gradle b/build_forge.gradle
index 6a68e14b79..e2d2b587c7 100644
--- a/build_forge.gradle
+++ b/build_forge.gradle
@@ -113,6 +113,7 @@ dependencies {
     // And this is only needed because custom file systems are REQUIRED to be on the boot classloader.
     // This has ASM/BootStrap/Unsafe all because I haven't gotten around to moving UnionFileSystem out to its own project.
     bootstrap(libs.jarjar.fs)     // JarInJar file system
+    bootstrap(libs.roimfs)        // JarInJar File System - FileSystems need to be on boot loader.
     bootstrap(libs.bundles.jimfs) // In memory file system used for ForgeDev launches
     bootstrap(libs.securemodules) // Has Union file system in it
     bootstrap(libs.unsafe)        // Needed by securemodules