diff --git a/CodePush.js b/CodePush.js
index 11b00ce..d7ff97e 100644
--- a/CodePush.js
+++ b/CodePush.js
@@ -187,9 +187,9 @@ async function sync(options = {}, syncStatusChangeCallback, downloadProgressCall
     await CodePush.notifyApplicationReady();
     
     syncStatusChangeCallback(CodePush.SyncStatus.CHECKING_FOR_UPDATE);
-    let remotePackage = await checkForUpdate(syncOptions.deploymentKey);
+    const remotePackage = await checkForUpdate(syncOptions.deploymentKey);
     
-    let doDownloadAndInstall = async () => {
+    const doDownloadAndInstall = async () => {
       syncStatusChangeCallback(CodePush.SyncStatus.DOWNLOADING_PACKAGE);
       let localPackage = await remotePackage.download(downloadProgressCallback);
       
diff --git a/request-fetch-adapter.js b/request-fetch-adapter.js
index fec3f63..5571ceb 100644
--- a/request-fetch-adapter.js
+++ b/request-fetch-adapter.js
@@ -21,7 +21,7 @@ let request = async (verb, url, body, callback) => {
         });
         
         const statusCode = response.status;
-        let body = await response.text();
+        const body = await response.text();
         callback(null, { statusCode, body });
     } catch (err) {
         callback(err);