diff --git a/manifest.json b/manifest.json
index a5516a7..5ef241d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -27,6 +27,7 @@
     "src/background/gvl/gvl-catalog-normalizer.js",
     "src/background/db/db-retention.js",
     "src/background/db/db-record-locks.js",
+    "src/core/stable-serialize.js",
     "src/background/utils.js",
     "src/core/settings-storage.js",
     "src/background/settings.js",
diff --git a/src/background/utils.js b/src/background/utils.js
index 91f6497..16291f7 100644
--- a/src/background/utils.js
+++ b/src/background/utils.js
@@ -7,24 +7,3 @@ async function sha256Hex(input) {
     .map((byte) => byte.toString(16).padStart(2, "0"))
     .join("");
 }
-
-function stableStringify(value) {
-  return JSON.stringify(sortObjectKeys(value));
-}
-
-function sortObjectKeys(value) {
-  if (Array.isArray(value)) {
-    return value.map(sortObjectKeys);
-  }
-
-  if (value && typeof value === "object") {
-    return Object.keys(value)
-      .sort()
-      .reduce((result, key) => {
-        result[key] = sortObjectKeys(value[key]);
-        return result;
-      }, {});
-  }
-
-  return value;
-}
diff --git a/src/core/stable-serialize.js b/src/core/stable-serialize.js
new file mode 100644
index 0000000..c258192
--- /dev/null
+++ b/src/core/stable-serialize.js
@@ -0,0 +1,20 @@
+function stableStringify(value) {
+  return JSON.stringify(sortObjectKeys(value));
+}
+
+function sortObjectKeys(value) {
+  if (Array.isArray(value)) {
+    return value.map(sortObjectKeys);
+  }
+
+  if (value && typeof value === "object") {
+    return Object.keys(value)
+      .sort()
+      .reduce((result, key) => {
+        result[key] = sortObjectKeys(value[key]);
+        return result;
+      }, {});
+  }
+
+  return value;
+}