diff --git a/packages/google-cloud-translate/package.json b/packages/google-cloud-translate/package.json
index e723f26518a3..9ad5e7501473 100644
--- a/packages/google-cloud-translate/package.json
+++ b/packages/google-cloud-translate/package.json
@@ -50,7 +50,7 @@
   },
   "dependencies": {
     "@google-cloud/common": "^4.0.0",
-    "@google-cloud/promisify": "^3.0.0",
+    "@google-cloud/promisify": "^4.0.0",
     "arrify": "^2.0.0",
     "extend": "^3.0.2",
     "google-gax": "^4.0.3",
diff --git a/packages/google-cloud-vision/package.json b/packages/google-cloud-vision/package.json
index a0fac52eaeaa..c0aa3b827932 100644
--- a/packages/google-cloud-vision/package.json
+++ b/packages/google-cloud-vision/package.json
@@ -49,7 +49,7 @@
     "test": "c8 mocha build/test"
   },
   "dependencies": {
-    "@google-cloud/promisify": "^3.0.0",
+    "@google-cloud/promisify": "^4.0.0",
     "google-gax": "^4.0.3",
     "is": "^3.3.0"
   },