diff --git a/package-lock.json b/package-lock.json
index 1292672..4e464d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
         "browserify-zlib": "^0.2.0",
         "codemirror": "^5.62.3",
         "file-saver": "^2.0.5",
-        "fsh-sushi": "^3.2.0",
+        "fsh-sushi": "3.3.0",
         "gofsh": "^2.0.1",
         "jszip": "^3.10.1",
         "lodash": "^4.17.21",
@@ -10102,9 +10102,9 @@
       }
     },
     "node_modules/fsh-sushi": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/fsh-sushi/-/fsh-sushi-3.2.0.tgz",
-      "integrity": "sha512-x868X0+a1vc/0Muw2l2j7S4+Xw51MNcEd9iAP0SJDEvl/ZjTUQhpPHzxL8p93NauJ05sRnlKMT15y+RZvt9rHg==",
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/fsh-sushi/-/fsh-sushi-3.3.0.tgz",
+      "integrity": "sha512-vUR1BsTI464a67l/M4I7UIt1gL6cc0I4yHj1n1C4g3tnN5IkJwOvx2qKX5G055NN98Ca0wGrVmNSeLaRbROuWQ==",
       "dependencies": {
         "ajv": "^8.12.0",
         "antlr4": "~4.13.0",
@@ -31777,9 +31777,9 @@
       "optional": true
     },
     "fsh-sushi": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/fsh-sushi/-/fsh-sushi-3.2.0.tgz",
-      "integrity": "sha512-x868X0+a1vc/0Muw2l2j7S4+Xw51MNcEd9iAP0SJDEvl/ZjTUQhpPHzxL8p93NauJ05sRnlKMT15y+RZvt9rHg==",
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/fsh-sushi/-/fsh-sushi-3.3.0.tgz",
+      "integrity": "sha512-vUR1BsTI464a67l/M4I7UIt1gL6cc0I4yHj1n1C4g3tnN5IkJwOvx2qKX5G055NN98Ca0wGrVmNSeLaRbROuWQ==",
       "requires": {
         "ajv": "^8.12.0",
         "antlr4": "~4.13.0",
diff --git a/package.json b/package.json
index 1c316e0..c3c99b2 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "browserify-zlib": "^0.2.0",
     "codemirror": "^5.62.3",
     "file-saver": "^2.0.5",
-    "fsh-sushi": "^3.2.0",
+    "fsh-sushi": "3.3.0",
     "gofsh": "^2.0.1",
     "jszip": "^3.10.1",
     "lodash": "^4.17.21",
@@ -53,6 +53,9 @@
   "eslintConfig": {
     "extends": "react-app"
   },
+  "jest": {
+    "resolver": "<rootDir>/resolver.js"
+  },
   "browserslist": {
     "production": [
       ">0.2%",
diff --git a/resolver.js b/resolver.js
new file mode 100644
index 0000000..b8e6d7e
--- /dev/null
+++ b/resolver.js
@@ -0,0 +1,19 @@
+// Based on documentation here: https://jestjs.io/docs/configuration#resolver-string
+// FSH Online needs a resolver because the anltr4 package tries to manipulate which dist file
+// to use in node vs browser environments in the package.json#exports property.
+// However, Jest ignores the exports property. So we need a resolver to resolve it correctly.
+// Also see https://github.com/jestjs/jest/issues/10422
+module.exports = (path, options) => {
+  // Call the defaultResolver, so we leverage its cache, error handling, etc.
+  return options.defaultResolver(path, {
+    ...options,
+    // Use packageFilter to process parsed `package.json` before the resolution (see https://www.npmjs.com/package/resolve#resolveid-opts-cb)
+    packageFilter: (pkg) => {
+      return {
+        ...pkg,
+        // Alter the value of `main` before resolving the antlr4 package
+        main: pkg.name === 'antlr4' ? 'dist/antlr4.node.cjs' : pkg.main
+      };
+    }
+  });
+};
diff --git a/src/components/TopBar.js b/src/components/TopBar.js
index f391ab8..e1e62a8 100644
--- a/src/components/TopBar.js
+++ b/src/components/TopBar.js
@@ -59,7 +59,7 @@ export default function TopBar() {
                   FSH ONLINE
                 </Typography>
                 <Typography order={2} className={classes.versionText}>
-                  Powered by SUSHI v3.1.0 and GoFSH v2.0.1
+                  Powered by SUSHI v3.3.0 and GoFSH v2.0.1
                 </Typography>
               </StylesProvider>
             </Box>