diff --git a/packages/google-cloud-dlp/setup.py b/packages/google-cloud-dlp/setup.py
index e573fd30d89e..cfd77da164ea 100644
--- a/packages/google-cloud-dlp/setup.py
+++ b/packages/google-cloud-dlp/setup.py
@@ -28,7 +28,7 @@
     # Until this issue is closed
     # https://github.com/googleapis/google-cloud-python/issues/10566
     "google-api-core[grpc] >= 1.31.5, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.0",
-    "proto-plus >= 0.4.0",
+    "proto-plus >= 1.15.0",
     "pytz >= 2021.1",
 ]
 
diff --git a/packages/google-cloud-dlp/testing/constraints-3.6.txt b/packages/google-cloud-dlp/testing/constraints-3.6.txt
index b971d2456871..9f829f6a0a4c 100644
--- a/packages/google-cloud-dlp/testing/constraints-3.6.txt
+++ b/packages/google-cloud-dlp/testing/constraints-3.6.txt
@@ -6,5 +6,5 @@
 # e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
 # Then this file should have foo==1.14.0
 google-api-core==1.31.5
-proto-plus==0.4.0
+proto-plus==1.15.0
 libcst==0.2.5