diff --git a/package.json b/package.json
index 1513fa862a..c757a19e76 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "escape-string-regexp": "^4.0.0",
     "gecko-profiler-demangle": "^0.3.3",
     "idb": "^8.0.3",
-    "iongraph-web": "0.1.4",
+    "iongraph-web": "0.1.15",
     "jszip": "^3.10.1",
     "long": "^5.3.2",
     "memoize-immutable": "^3.0.0",
diff --git a/src/components/shared/IonGraphView.tsx b/src/components/shared/IonGraphView.tsx
index fecaf73c5f..89fb7eb305 100644
--- a/src/components/shared/IonGraphView.tsx
+++ b/src/components/shared/IonGraphView.tsx
@@ -3,29 +3,29 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 import type { LineTimings } from 'firefox-profiler/types';
 
-import { GraphViewer } from 'iongraph-web';
-import type { Func } from 'iongraph-web';
+import { GraphViewer, migrate } from 'iongraph-web';
 import 'iongraph-web/dist/style.css';
 
 import { useMemo } from 'react';
 
 type IonGraphViewProps = {
   readonly sourceCode: string;
-  // TODO: use these when https://github.com/mozilla-spidermonkey/iongraph-web/issues/3 is resolved.
   readonly timings: LineTimings;
   readonly hotSpotTimings: LineTimings;
 };
 
 export function IonGraphView(props: IonGraphViewProps) {
-  const func = useMemo(() => {
+  const ionJSON = useMemo(() => {
     if (props.sourceCode.trim() === '') {
       return null;
     }
-    return JSON.parse(props.sourceCode) as Func;
+    return migrate(JSON.parse(props.sourceCode));
   }, [props.sourceCode]);
 
-  if (!func) {
+  if (!ionJSON?.functions[0]) {
     return <div />;
   }
-  return <GraphViewer func={func} />;
+  return (
+    <GraphViewer func={ionJSON.functions[0]} sampleCounts={props.timings} />
+  );
 }
diff --git a/yarn.lock b/yarn.lock
index 19d2320d5e..5d1a8f9cfd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6421,10 +6421,10 @@ interpret@^3.1.1:
   resolved "https://registry.yarnpkg.com/interpret/-/interpret-3.1.1.tgz#5be0ceed67ca79c6c4bc5cf0d7ee843dcea110c4"
   integrity sha512-6xwYfHbajpoF0xLW+iwLkhwgvLoZDfjYfoFNu8ftMoXINzwuymNLd9u/KmwtdT2GbR+/Cz66otEGEVVUHX9QLQ==
 
-iongraph-web@0.1.4:
-  version "0.1.4"
-  resolved "https://registry.yarnpkg.com/iongraph-web/-/iongraph-web-0.1.4.tgz#ee797db67660f3628d65970374ffb06327c7e122"
-  integrity sha512-dH/bBiplFDYWP1WKr8PDPMHY+rQTSyrokGtbqPk2IO0tnCp0zLbXCByJdZiZthqVKjZYzq5V0ouSqW0uijR/6A==
+iongraph-web@0.1.15:
+  version "0.1.15"
+  resolved "https://registry.yarnpkg.com/iongraph-web/-/iongraph-web-0.1.15.tgz#8d39240cbfaf476ff7e0f3f14b0301eff33477d7"
+  integrity sha512-9QRt32bVk9Uskwb0NYgrrGBo3p7gI2pIuwMgq/ifR3jzyfgKQeICZfngW6GM2Wvivxdxb0y8MxIzJ4Kh3cWZuQ==
 
 ipaddr.js@1.9.1:
   version "1.9.1"