diff --git a/package.json b/package.json
index 298933fdc0..f65e331c23 100644
--- a/package.json
+++ b/package.json
@@ -112,7 +112,7 @@
     "redux-thunk": "^3.1.0",
     "reselect": "^4.1.8",
     "smol-toml": "^1.7.0",
-    "source-map": "^0.7.6",
+    "source-map": "^0.8.0",
     "url": "^0.11.4",
     "valibot": "^1.4.2",
     "workbox-window": "^7.4.1"
diff --git a/src/profile-logic/source-map-store.ts b/src/profile-logic/source-map-store.ts
index 068719e3d9..1ba9a22ebc 100644
--- a/src/profile-logic/source-map-store.ts
+++ b/src/profile-logic/source-map-store.ts
@@ -25,10 +25,8 @@ export class SourceMapStore {
   ): Promise<SourceMapStore> {
     const consumers = new Map<IndexIntoSourceTable, SourceMapConsumer>();
 
-    // `initialize` is a static method at runtime but typed as instance method
-    // in the .d.ts. https://github.com/mozilla/source-map/pull/520
     // No-op if already initialized.
-    await (LibSourceMapConsumer as any).initialize({
+    LibSourceMapConsumer.initialize({
       'lib/mappings.wasm': wasmUrl,
     });
 
diff --git a/yarn.lock b/yarn.lock
index 5a94d19979..4324e73af2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7283,11 +7283,6 @@ lodash.merge@^4.6.2:
   resolved "https://registry.yarnpkg.com/lodash.merge/-/lodash.merge-4.6.2.tgz#558aa53b43b661e1925a0afdfa36a9a1085fe57a"
   integrity sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ==
 
-lodash.sortby@^4.7.0:
-  version "4.7.0"
-  resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
-  integrity sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=
-
 lodash.throttle@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/lodash.throttle/-/lodash.throttle-4.1.1.tgz#c23e91b710242ac70c37f1e1cda9274cc39bf2f4"
@@ -10158,17 +10153,10 @@ source-map@^0.6.0:
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
   integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
 
-source-map@^0.7.6:
-  version "0.7.6"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.6.tgz#a3658ab87e5b6429c8a1f3ba0083d4c61ca3ef02"
-  integrity sha512-i5uvt8C3ikiWeNZSVZNWcfZPItFQOsYTUAOkcUPGd8DqDy1uOUikjt5dG+uRlwyvR108Fb9DOd4GvXfT0N2/uQ==
-
-source-map@^0.8.0-beta.0:
-  version "0.8.0-beta.0"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.8.0-beta.0.tgz#d4c1bb42c3f7ee925f005927ba10709e0d1d1f11"
-  integrity sha512-2ymg6oRBpebeZi9UUNsgQ89bhx01TcTkmNTGnNO88imTmbSgy4nfujrgVEFKWpMTEGA11EDkTt7mqObTPdigIA==
-  dependencies:
-    whatwg-url "^7.0.0"
+source-map@^0.8.0, source-map@^0.8.0-beta.0:
+  version "0.8.0"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.8.0.tgz#72b9006383bd9fc70d52e435c91c2d73249c60a4"
+  integrity sha512-d8EqvL+k/SOXCreS/SUzg2ciyHqBBLcN/yuRjFsbvVhHTE2pgei7oAhmPM7kWFbkX6OSMQfUq4KbkF3au9lhYQ==
 
 space-separated-tokens@^2.0.0:
   version "2.0.1"
@@ -10811,13 +10799,6 @@ tough-cookie@^5.1.1:
   dependencies:
     tldts "^6.1.32"
 
-tr46@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/tr46/-/tr46-1.0.1.tgz#a8b13fd6bfd2489519674ccde55ba3693b706d09"
-  integrity sha1-qLE/1r/SSJUZZ0zN5VujaTtwbQk=
-  dependencies:
-    punycode "^2.1.0"
-
 tr46@^5.1.0:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/tr46/-/tr46-5.1.1.tgz#96ae867cddb8fdb64a49cc3059a8d428bcf238ca"
@@ -11495,11 +11476,6 @@ web-namespaces@^2.0.0:
   resolved "https://registry.yarnpkg.com/web-namespaces/-/web-namespaces-2.0.0.tgz#1f6a2d7b5823329abaedeb6bdf09ef2fed35db13"
   integrity sha512-dE7ELZRVWh0ceQsRgkjLgsAvwTuv3kcjSY/hLjqL0llleUlQBDjE9JkB9FCBY5F2mnFEwiyJoowl8+NVGHe8dw==
 
-webidl-conversions@^4.0.2:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
-  integrity sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==
-
 webidl-conversions@^7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-7.0.0.tgz#256b4e1882be7debbf01d05f0aa2039778ea080a"
@@ -11525,15 +11501,6 @@ whatwg-url@^14.0.0, whatwg-url@^14.1.1:
     tr46 "^5.1.0"
     webidl-conversions "^7.0.0"
 
-whatwg-url@^7.0.0:
-  version "7.1.0"
-  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-7.1.0.tgz#c2c492f1eca612988efd3d2266be1b9fc6170d06"
-  integrity sha512-WUu7Rg1DroM7oQvGWfOiAK21n74Gg+T4elXEQYkOhtyLeWiJFoOGLXPKI/9gzIie9CtwVLm8wtw6YJdKyxSjeg==
-  dependencies:
-    lodash.sortby "^4.7.0"
-    tr46 "^1.0.1"
-    webidl-conversions "^4.0.2"
-
 when-exit@^2.1.4:
   version "2.1.5"
   resolved "https://registry.yarnpkg.com/when-exit/-/when-exit-2.1.5.tgz#53fa4ffa2ba4c792213fb6617eb7d08f0dcb1a9f"