diff --git a/src/JsonKeyValueAdapter.ts b/src/JsonKeyValueAdapter.ts
index fe930c71..c1160a32 100644
--- a/src/JsonKeyValueAdapter.ts
+++ b/src/JsonKeyValueAdapter.ts
@@ -25,7 +25,7 @@ export class JsonKeyValueAdapter implements IKeyValueAdapter {
         if (!setting.value) {
             throw new Error("Unexpected empty value for application/json content type.");
         }
-        let parsedValue: any;
+        let parsedValue: unknown;
         try {
             parsedValue = JSON.parse(setting.value);
         } catch (error) {
@@ -42,9 +42,9 @@ function isJsonContentType(contentTypeValue: string): boolean {
         return false;
     }
 
-    let contentTypeNormalized: string = contentTypeValue.trim().toLowerCase();
-    let mimeType: string = contentTypeNormalized.split(";", 1)[0].trim();
-    let typeParts: string[] = mimeType.split("/");
+    const contentTypeNormalized: string = contentTypeValue.trim().toLowerCase();
+    const mimeType: string = contentTypeNormalized.split(";", 1)[0].trim();
+    const typeParts: string[] = mimeType.split("/");
     if (typeParts.length !== 2) {
         return false;
     }
diff --git a/test/json.test.js b/test/json.test.js
index ea2a1bef..679eaaa1 100644
--- a/test/json.test.js
+++ b/test/json.test.js
@@ -15,12 +15,12 @@ const {
 
 const jsonKeyValue = {
     value: '{"Test":{"Level":"Debug"},"Prod":{"Level":"Warning"}}',
-    key: 'json.settings.logging',
+    key: "json.settings.logging",
     label: null,
-    contentType: 'application/json',
-    lastModified: '2023-05-04T04:32:56.000Z',
+    contentType: "application/json",
+    lastModified: "2023-05-04T04:32:56.000Z",
     tags: {},
-    etag: 'GdmsLWq3mFjFodVEXUYRmvFr3l_qRiKAW_KdpFbxZKk',
+    etag: "GdmsLWq3mFjFodVEXUYRmvFr3l_qRiKAW_KdpFbxZKk",
     isReadOnly: false
 };
 const keyVaultKeyValue = createMockedKeyVaultReference("TestKey", "https://fake-vault-name.vault.azure.net/secrets/fakeSecretName");