diff --git a/appengine/standard/django/requirements.txt b/appengine/standard/django/requirements.txt
index 6da4b3c39bfd..2a90dce79a01 100644
--- a/appengine/standard/django/requirements.txt
+++ b/appengine/standard/django/requirements.txt
@@ -1,2 +1,2 @@
 PyMySQL==0.9.3
-Django<2.0.0,>=1.11.8
+Django==1.11.28 # needs to stay under 2.0.0
diff --git a/bigquery/datalab-migration/requirements.txt b/bigquery/datalab-migration/requirements.txt
index 4a946ff27248..b95c19e5c5e0 100644
--- a/bigquery/datalab-migration/requirements.txt
+++ b/bigquery/datalab-migration/requirements.txt
@@ -2,4 +2,4 @@ google-cloud-bigquery[pandas,pyarrow]==1.8.1
 datalab==1.1.4
 ipython==7.2.0; python_version > "2.7"
 ipython<=5.5; python_version == "2.7"
-google-cloud-monitoring<=0.28.1
+google-cloud-monitoring==0.28.1
diff --git a/dataproc/requirements.txt b/dataproc/requirements.txt
index f39bf65a8b36..a54880f15598 100644
--- a/dataproc/requirements.txt
+++ b/dataproc/requirements.txt
@@ -1,4 +1,4 @@
-grpcio>=1.2.0
+grpcio==1.27.1
 google-auth==1.10.0
 google-auth-httplib2==0.0.3
 google-cloud==0.34.0
diff --git a/endpoints/bookstore-grpc-transcoding/requirements.txt b/endpoints/bookstore-grpc-transcoding/requirements.txt
index e7487cf5b3bf..f86694ccf046 100644
--- a/endpoints/bookstore-grpc-transcoding/requirements.txt
+++ b/endpoints/bookstore-grpc-transcoding/requirements.txt
@@ -1,5 +1,5 @@
-grpcio>=1.10.0
-grpcio-tools>=1.10.0
-google-auth>=1.4.1
-six>=1.11
-googleapis-common-protos>=1.5.3
+grpcio==1.27.1
+grpcio-tools==1.27.1
+google-auth==1.11.0
+six==1.14.0
+googleapis-common-protos==1.51.0
diff --git a/endpoints/bookstore-grpc/requirements.txt b/endpoints/bookstore-grpc/requirements.txt
index e1c139acee88..0cbdd51806c7 100644
--- a/endpoints/bookstore-grpc/requirements.txt
+++ b/endpoints/bookstore-grpc/requirements.txt
@@ -1,4 +1,4 @@
-grpcio>=1.10.0
-grpcio-tools>=1.10.0
-google-auth>=1.4.1
-six>=1.11
+grpcio==1.27.1
+grpcio-tools==1.27.1
+google-auth==1.11.0
+six==1.14.0