diff --git a/package.json b/package.json
index 2dc24800e..d94a5f3e5 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "@google-cloud/opentelemetry-resource-util": "^2.4.0",
     "@google-cloud/precise-date": "^4.0.0",
     "@google-cloud/projectify": "^4.0.0",
-    "@google-cloud/promisify": "^4.0.0",
+    "@google-cloud/promisify": "4.0.0",
     "@opentelemetry/api": "^1.9.0",
     "@opentelemetry/resources": "^1.30.0",
     "@opentelemetry/sdk-metrics": "^1.30.0",
diff --git a/src/instance.ts b/src/instance.ts
index 7d5569bd5..420d9cbf5 100644
--- a/src/instance.ts
+++ b/src/instance.ts
@@ -1310,7 +1310,7 @@ Please use the format 'my-instance' or '${bigtable.projectName}/instances/my-ins
         : callback!;
 
     if (policy.etag !== null && policy.etag !== undefined) {
-      (policy.etag as {} as Buffer) = Buffer.from(policy.etag);
+      (policy.etag as {} as Buffer) = Buffer.from(policy.etag as string);
     }
     const reqOpts = {
       resource: this.name,
diff --git a/src/table.ts b/src/table.ts
index ea721b3ac..d59eaf0ca 100644
--- a/src/table.ts
+++ b/src/table.ts
@@ -1042,7 +1042,7 @@ export class Table extends TabularApiSurface {
         : callback!;
 
     if (policy.etag !== null && policy.etag !== undefined) {
-      (policy.etag as {} as Buffer) = Buffer.from(policy.etag);
+      (policy.etag as {} as Buffer) = Buffer.from(policy.etag as string);
     }
     const reqOpts = {
       resource: this.name,
diff --git a/test/chunktransformer.ts b/test/chunktransformer.ts
index d58a2d434..5e08c46de 100644
--- a/test/chunktransformer.ts
+++ b/test/chunktransformer.ts
@@ -39,6 +39,7 @@ const FakeMutation = {
   }),
 };
 
+// Some-comment
 describe('Bigtable/ChunkTransformer', () => {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   let ChunkTransformer: any;