diff --git a/bigquery/go.mod b/bigquery/go.mod
index 2a4f8a0482d..d313d68c48f 100644
--- a/bigquery/go.mod
+++ b/bigquery/go.mod
@@ -11,6 +11,6 @@ require (
 	golang.org/x/oauth2 v0.0.0-20210113160501-8b1d76fa0423 // indirect
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 )
diff --git a/bigquery/go.sum b/bigquery/go.sum
index 3d35a3d67b9..f7b8b2defd0 100644
--- a/bigquery/go.sum
+++ b/bigquery/go.sum
@@ -521,8 +521,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/bigtable/go.mod b/bigtable/go.mod
index ceb01c66777..b9160f41acd 100644
--- a/bigtable/go.mod
+++ b/bigtable/go.mod
@@ -11,7 +11,7 @@ require (
 	golang.org/x/oauth2 v0.0.0-20210113160501-8b1d76fa0423
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 	rsc.io/binaryregexp v0.2.0
 )
diff --git a/bigtable/go.sum b/bigtable/go.sum
index 945cbe455c2..da7d210dff1 100644
--- a/bigtable/go.sum
+++ b/bigtable/go.sum
@@ -533,8 +533,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/bigtable/integration_test.go b/bigtable/integration_test.go
index b6d2edafe87..38ad5942507 100644
--- a/bigtable/integration_test.go
+++ b/bigtable/integration_test.go
@@ -22,6 +22,7 @@ import (
 	"fmt"
 	"math"
 	"math/rand"
+	"os/exec"
 	"reflect"
 	"sort"
 	"strings"
@@ -73,6 +74,10 @@ func populatePresidentsGraph(table *Table) error {
 var instanceToCreate string
 var instanceToCreateZone string
 var instanceToCreateZone2 string
+var blackholeDpv6Cmd string
+var blackholeDpv4Cmd string
+var allowDpv6Cmd string
+var allowDpv4Cmd string
 
 func init() {
 	// Don't test instance creation by default, as quota is necessary and aborted tests could strand resources.
@@ -82,6 +87,11 @@ func init() {
 		"The zone in which to create the new test instance.")
 	flag.StringVar(&instanceToCreateZone2, "it.instance-to-create-zone2", "us-east1-c",
 		"The zone in which to create a second cluster in the test instance.")
+	// Use sysctl or iptables to blackhole DirectPath IP for fallback tests.
+	flag.StringVar(&blackholeDpv6Cmd, "it.blackhole-dpv6-cmd", "", "Command to make LB and backend addresses blackholed over dpv6")
+	flag.StringVar(&blackholeDpv4Cmd, "it.blackhole-dpv4-cmd", "", "Command to make LB and backend addresses blackholed over dpv4")
+	flag.StringVar(&allowDpv6Cmd, "it.allow-dpv6-cmd", "", "Command to make LB and backend addresses allowed over dpv6")
+	flag.StringVar(&allowDpv4Cmd, "it.allow-dpv4-cmd", "", "Command to make LB and backend addresses allowed over dpv4")
 }
 
 func TestIntegration_ConditionalMutations(t *testing.T) {
@@ -2208,6 +2218,81 @@ func TestIntegration_AdminBackup(t *testing.T) {
 	}
 }
 
+// TestIntegration_DirectPathFallback tests the CFE fallback when the directpath net is blackholed.
+func TestIntegration_DirectPathFallback(t *testing.T) {
+	ctx := context.Background()
+	testEnv, _, _, table, _, cleanup, err := setupIntegration(ctx, t)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer cleanup()
+
+	if !testEnv.Config().AttemptDirectPath {
+		t.Skip()
+	}
+
+	if len(blackholeDpv6Cmd) == 0 {
+		t.Fatal("-it.blackhole-dpv6-cmd unset")
+	}
+	if len(blackholeDpv4Cmd) == 0 {
+		t.Fatal("-it.blackhole-dpv4-cmd unset")
+	}
+	if len(allowDpv6Cmd) == 0 {
+		t.Fatal("-it.allowdpv6-cmd unset")
+	}
+	if len(allowDpv4Cmd) == 0 {
+		t.Fatal("-it.allowdpv4-cmd unset")
+	}
+
+	if err := populatePresidentsGraph(table); err != nil {
+		t.Fatal(err)
+	}
+
+	// Precondition: wait for DirectPath to connect.
+	dpEnabled := examineTraffic(ctx, testEnv, table, false)
+	if !dpEnabled {
+		t.Fatalf("Failed to observe RPCs over DirectPath")
+	}
+
+	// Enable the blackhole, which will prevent communication with grpclb and thus DirectPath.
+	blackholeDirectPath(testEnv, t)
+	dpDisabled := examineTraffic(ctx, testEnv, table, true)
+	if !dpDisabled {
+		t.Fatalf("Failed to fallback to CFE after blackhole DirectPath")
+	}
+
+	// Disable the blackhole, and client should use DirectPath again.
+	allowDirectPath(testEnv, t)
+	dpEnabled = examineTraffic(ctx, testEnv, table, false)
+	if !dpEnabled {
+		t.Fatalf("Failed to fallback to CFE after blackhole DirectPath")
+	}
+}
+
+// examineTraffic returns whether RPCs use DirectPath (blackholeDP = false) or CFE (blackholeDP = true).
+func examineTraffic(ctx context.Context, testEnv IntegrationEnv, table *Table, blackholeDP bool) bool {
+	numCount := 0
+	const (
+		numRPCsToSend  = 20
+		minCompleteRPC = 40
+	)
+
+	start := time.Now()
+	for time.Since(start) < 2*time.Minute {
+		for i := 0; i < numRPCsToSend; i++ {
+			_, _ = table.ReadRow(ctx, "jadams")
+			if _, useDP := isDirectPathRemoteAddress(testEnv); useDP != blackholeDP {
+				numCount++
+				if numCount >= minCompleteRPC {
+					return true
+				}
+			}
+			time.Sleep(100 * time.Millisecond)
+		}
+	}
+	return false
+}
+
 func setupIntegration(ctx context.Context, t *testing.T) (_ IntegrationEnv, _ *Client, _ *AdminClient, table *Table, tableName string, cleanup func(), _ error) {
 	testEnv, err := NewIntegrationEnv()
 	if err != nil {
@@ -2325,3 +2410,27 @@ func isDirectPathRemoteAddress(testEnv IntegrationEnv) (_ string, _ bool) {
 	// DirectPath ipv6 can use either ipv4 or ipv6 traffic.
 	return remoteIP, strings.HasPrefix(remoteIP, directPathIPV4Prefix) || strings.HasPrefix(remoteIP, directPathIPV6Prefix)
 }
+
+func blackholeDirectPath(testEnv IntegrationEnv, t *testing.T) {
+	cmdRes := exec.Command("bash", "-c", blackholeDpv4Cmd)
+	out, _ := cmdRes.CombinedOutput()
+	t.Logf(string(out))
+	if testEnv.Config().DirectPathIPV4Only {
+		return
+	}
+	cmdRes = exec.Command("bash", "-c", blackholeDpv6Cmd)
+	out, _ = cmdRes.CombinedOutput()
+	t.Logf(string(out))
+}
+
+func allowDirectPath(testEnv IntegrationEnv, t *testing.T) {
+	cmdRes := exec.Command("bash", "-c", allowDpv4Cmd)
+	out, _ := cmdRes.CombinedOutput()
+	t.Logf(string(out))
+	if testEnv.Config().DirectPathIPV4Only {
+		return
+	}
+	cmdRes = exec.Command("bash", "-c", allowDpv6Cmd)
+	out, _ = cmdRes.CombinedOutput()
+	t.Logf(string(out))
+}
diff --git a/datastore/go.mod b/datastore/go.mod
index 4b69d9f982e..e241ef74cc6 100644
--- a/datastore/go.mod
+++ b/datastore/go.mod
@@ -10,7 +10,7 @@ require (
 	golang.org/x/oauth2 v0.0.0-20210113160501-8b1d76fa0423 // indirect
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 	google.golang.org/protobuf v1.25.0
 )
diff --git a/datastore/go.sum b/datastore/go.sum
index a91f7e42d33..5257a95f85b 100644
--- a/datastore/go.sum
+++ b/datastore/go.sum
@@ -527,8 +527,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/firestore/go.mod b/firestore/go.mod
index 4371d006ca2..867540448f5 100644
--- a/firestore/go.mod
+++ b/firestore/go.mod
@@ -10,6 +10,6 @@ require (
 	golang.org/x/oauth2 v0.0.0-20210113160501-8b1d76fa0423 // indirect
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 )
diff --git a/firestore/go.sum b/firestore/go.sum
index 2b5cace1e7b..ea75c29b027 100644
--- a/firestore/go.sum
+++ b/firestore/go.sum
@@ -499,8 +499,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/go.mod b/go.mod
index 58ec7b56f90..96ed8144508 100644
--- a/go.mod
+++ b/go.mod
@@ -19,6 +19,6 @@ require (
 	golang.org/x/text v0.3.5
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 )
diff --git a/go.sum b/go.sum
index 5f77fcc3cc8..abff120fec0 100644
--- a/go.sum
+++ b/go.sum
@@ -508,8 +508,8 @@ google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0 h1:cfg4PD8YEdSFnm7qLV4++93WcmhH2nIUhMjhdCvl3j8=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1 h1:Hz2g2wirWK7H0qIIhGIqRGTuMwTE8HEKFnDZZ7lm9NU=
diff --git a/internal/examples/fake/go.mod b/internal/examples/fake/go.mod
index 11bcb324642..a89ac49c777 100644
--- a/internal/examples/fake/go.mod
+++ b/internal/examples/fake/go.mod
@@ -7,6 +7,6 @@ require (
 	golang.org/x/net v0.0.0-20201224014010-6772e930b67b // indirect
 	golang.org/x/oauth2 v0.0.0-20210113160501-8b1d76fa0423 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.33.2
 )
diff --git a/internal/examples/fake/go.sum b/internal/examples/fake/go.sum
index 7bc695c7dd0..4c008fd197d 100644
--- a/internal/examples/fake/go.sum
+++ b/internal/examples/fake/go.sum
@@ -376,8 +376,8 @@ google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/internal/examples/mock/go.mod b/internal/examples/mock/go.mod
index a87a7325ba6..5af8f17133e 100644
--- a/internal/examples/mock/go.mod
+++ b/internal/examples/mock/go.mod
@@ -10,6 +10,6 @@ require (
 	golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3 // indirect
 	golang.org/x/text v0.3.4 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.33.2 // indirect
 )
diff --git a/internal/examples/mock/go.sum b/internal/examples/mock/go.sum
index cc0583a44ba..ffa20ee5a22 100644
--- a/internal/examples/mock/go.sum
+++ b/internal/examples/mock/go.sum
@@ -77,8 +77,8 @@ google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
diff --git a/internal/godocfx/go.sum b/internal/godocfx/go.sum
index 8511b608a14..8c117942b95 100644
--- a/internal/godocfx/go.sum
+++ b/internal/godocfx/go.sum
@@ -304,8 +304,8 @@ google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7Fc
 google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20200827165113-ac2560b5e952/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/logging/go.mod b/logging/go.mod
index 516d6a0d70d..1712e88eca3 100644
--- a/logging/go.mod
+++ b/logging/go.mod
@@ -12,6 +12,6 @@ require (
 	golang.org/x/oauth2 v0.0.0-20210113160501-8b1d76fa0423
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 )
diff --git a/logging/go.sum b/logging/go.sum
index 8d39b37d033..26896a8a067 100644
--- a/logging/go.sum
+++ b/logging/go.sum
@@ -505,8 +505,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/pubsub/go.mod b/pubsub/go.mod
index b10a427b9aa..de10d69eec1 100644
--- a/pubsub/go.mod
+++ b/pubsub/go.mod
@@ -13,6 +13,6 @@ require (
 	golang.org/x/time v0.0.0-20201208040808-7e3f01d25324
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 )
diff --git a/pubsub/go.sum b/pubsub/go.sum
index e0732ddaf08..bbb33967b12 100644
--- a/pubsub/go.sum
+++ b/pubsub/go.sum
@@ -438,8 +438,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/pubsublite/go.mod b/pubsublite/go.mod
index 97403ccae2c..f921dba434c 100644
--- a/pubsublite/go.mod
+++ b/pubsublite/go.mod
@@ -14,7 +14,7 @@ require (
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 	google.golang.org/protobuf v1.25.0
 )
diff --git a/pubsublite/go.sum b/pubsublite/go.sum
index caa362e7790..3a4093a6ed4 100644
--- a/pubsublite/go.sum
+++ b/pubsublite/go.sum
@@ -409,8 +409,8 @@ google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201203001206-6486ece9c497/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201209185603-f92720507ed4/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/spanner/go.mod b/spanner/go.mod
index cc14dd44a18..9d1285828d7 100644
--- a/spanner/go.mod
+++ b/spanner/go.mod
@@ -12,7 +12,7 @@ require (
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 	google.golang.org/protobuf v1.25.0
 )
diff --git a/spanner/go.sum b/spanner/go.sum
index 34f9a132923..e68a1e48fce 100644
--- a/spanner/go.sum
+++ b/spanner/go.sum
@@ -497,8 +497,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
diff --git a/storage/go.mod b/storage/go.mod
index 724e4ad3a15..4c5d7028cc6 100644
--- a/storage/go.mod
+++ b/storage/go.mod
@@ -10,6 +10,6 @@ require (
 	golang.org/x/oauth2 v0.0.0-20210113160501-8b1d76fa0423
 	golang.org/x/tools v0.0.0-20210113180300-f96436850f18 // indirect
 	google.golang.org/api v0.36.0
-	google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06
+	google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595
 	google.golang.org/grpc v1.34.1
 )
diff --git a/storage/go.sum b/storage/go.sum
index ddfc8d8b9ba..f0736b8ca7c 100644
--- a/storage/go.sum
+++ b/storage/go.sum
@@ -482,8 +482,8 @@ google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20201109203340-2640f1f9cdfb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201201144952-b05cb90ed32e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06 h1:hj19rqmCfOxC/9vSgCO2ChmXBs+S8d1Niga10ujmqr0=
-google.golang.org/genproto v0.0.0-20210113155445-facbc42f5e06/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595 h1:x7nk+/4+SvuTDI4wnzQUlhvi+DTpyfncXBo3QWTFs7U=
+google.golang.org/genproto v0.0.0-20210113195801-ae06605f4595/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=