diff --git a/packages/google-cloud-container/setup.py b/packages/google-cloud-container/setup.py
index c1d6527ccfba..97699e528c1d 100644
--- a/packages/google-cloud-container/setup.py
+++ b/packages/google-cloud-container/setup.py
@@ -32,8 +32,9 @@
     # 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",
-    "grpc-google-iam-v1 >= 0.12.3, < 0.13dev",
-    "proto-plus >= 1.15.0",
+    "grpc-google-iam-v1 >=0.12.4, <1.0.0dev",
+    "proto-plus >= 1.15.0, <2.0.0dev",
+    "protobuf >= 3.19.0, <4.0.0dev",
 ]
 extras = {"libcst": "libcst >= 0.2.5"}
 
diff --git a/packages/google-cloud-container/testing/constraints-3.6.txt b/packages/google-cloud-container/testing/constraints-3.6.txt
index 3755c967fcfa..c4e0fd7dec6c 100644
--- a/packages/google-cloud-container/testing/constraints-3.6.txt
+++ b/packages/google-cloud-container/testing/constraints-3.6.txt
@@ -6,6 +6,7 @@
 # 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
-grpc-google-iam-v1==0.12.3
+grpc-google-iam-v1==0.12.4
 proto-plus==1.15.0
 libcst==0.2.5
+protobuf==3.19.0