diff --git a/packages/snap/snap.manifest.json b/packages/snap/snap.manifest.json
index 1d17d50..f5605a9 100644
--- a/packages/snap/snap.manifest.json
+++ b/packages/snap/snap.manifest.json
@@ -7,7 +7,7 @@
     "url": "https://github.com/tenderly/tenderly-snap.git"
   },
   "source": {
-    "shasum": "JNLIjh3TKVEi5tyOrY975mbE9GYvtA6ruLcmilpZvPc=",
+    "shasum": "kb5428TsWWeG9ZBWltgh9MEESOZFmNKzhi0GHDsKNAo=",
     "location": {
       "npm": {
         "filePath": "dist/bundle.js",
diff --git a/packages/snap/src/tenderly/utils.ts b/packages/snap/src/tenderly/utils.ts
index fe09474..7e16bb3 100644
--- a/packages/snap/src/tenderly/utils.ts
+++ b/packages/snap/src/tenderly/utils.ts
@@ -120,16 +120,15 @@ export const isTenderlyDomain = (origin: string) => {
  * @throws {Error} If the input format is invalid, or processing fails.
  * @example
  * parseChainId("eip155:1") // returns "0x1"
- * parseChainId("eip155:a86a") // returns "0xa86a"
- * parseChainId("eip155:76adf1") // returns "0x76adf1"
+ * parseChainId("eip155:11155111") // returns "0xaa36a7"
  */
 export const parseChainId = (chainId: string): string => {
   try {
     // Split the chainId string
     const [, reference] = chainId.split(':');
 
-    // Append '0x' to the reference and return
-    return `0x${reference}`;
+    // Convert the reference from base 10 to hexadecimal and prefix with '0x'
+    return `0x${parseInt(reference, 10).toString(16)}`;
   } catch (error) {
     throw new Error(
       `An unexpected error occurred while parsing CAIP-2 chainId (${chainId}): ${error.message}`,