diff --git a/Gopkg.lock b/Gopkg.lock
index 90d73b6195..a80776022b 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -417,7 +417,7 @@
 
 [[projects]]
   branch = "PMM-2.0"
-  digest = "1:8c5a70d25ba3802706df7c801338bd47c9d6f4d132784ee36fcf48ec3af48e9f"
+  digest = "1:7215bd6323e5ab20f47da37f708880472fc97edcf4d0de714b6dce28a0a55d42"
   name = "github.com/percona/pmm"
   packages = [
     "api/agentpb",
@@ -440,7 +440,7 @@
     "version",
   ]
   pruneopts = "NUT"
-  revision = "ca89e8a37a545062763882b74ca594393ab7ff4e"
+  revision = "5b15958558aaf106bb624317d20fb64f03d3cf93"
 
 [[projects]]
   digest = "1:6832634ec059f4bfddaff75621cf1c4750949129c6de2e5e58e01059d0851e25"
diff --git a/models/channel_helpers.go b/models/channel_helpers.go
index cce4b2e952..bc9f9959e6 100644
--- a/models/channel_helpers.go
+++ b/models/channel_helpers.go
@@ -238,6 +238,8 @@ func CreateChannel(q *reform.Querier, params *CreateChannelParams) (*Channel, er
 
 // ChangeChannelParams is params for changing existing channel.
 type ChangeChannelParams struct {
+	Summary string
+
 	EmailConfig     *EmailConfig
 	PagerDutyConfig *PagerDutyConfig
 	SlackConfig     *SlackConfig
@@ -254,11 +256,16 @@ func ChangeChannel(q *reform.Querier, channelID string, params *ChangeChannelPar
 	}
 
 	// remove previous configuration
+	row.Type = ""
 	row.EmailConfig = nil
 	row.PagerDutyConfig = nil
 	row.SlackConfig = nil
 	row.WebHookConfig = nil
 
+	if params.Summary != "" {
+		row.Summary = params.Summary
+	}
+
 	if params.EmailConfig != nil {
 		if err := checkEmailConfig(params.EmailConfig); err != nil {
 			return nil, err
diff --git a/models/channel_helpers_test.go b/models/channel_helpers_test.go
index b1c53843b0..ad49d948c5 100644
--- a/models/channel_helpers_test.go
+++ b/models/channel_helpers_test.go
@@ -54,6 +54,11 @@ func TestNotificationChannels(t *testing.T) {
 
 		expected, err := models.CreateChannel(q, &params)
 		require.NoError(t, err)
+		assert.Equal(t, models.Email, expected.Type)
+		assert.Equal(t, params.Summary, expected.Summary)
+		assert.Equal(t, params.Disabled, expected.Disabled)
+		assert.Equal(t, params.EmailConfig.SendResolved, expected.EmailConfig.SendResolved)
+		assert.EqualValues(t, params.EmailConfig.SendResolved, expected.EmailConfig.SendResolved)
 
 		actual, err := models.FindChannelByID(q, expected.ID)
 		require.NoError(t, err)
@@ -82,27 +87,26 @@ func TestNotificationChannels(t *testing.T) {
 		require.NoError(t, err)
 
 		uParams := &models.ChangeChannelParams{
-			EmailConfig: &models.EmailConfig{
+			Summary: "completely new summary",
+			SlackConfig: &models.SlackConfig{
 				SendResolved: true,
-				To:           []string{"test2@test.test"},
+				Channel:      "general",
 			},
 			Disabled: true,
 		}
 
 		updated, err := models.ChangeChannel(q, created.ID, uParams)
 		require.NoError(t, err)
-		assert.Equal(t, created.Type, updated.Type)
-		assert.Equal(t, created.Summary, updated.Summary)
+		assert.Equal(t, models.Slack, updated.Type)
+		assert.Equal(t, uParams.Summary, updated.Summary)
 		assert.Equal(t, uParams.Disabled, updated.Disabled)
-		assert.Equal(t, uParams.EmailConfig.SendResolved, updated.EmailConfig.SendResolved)
-		assert.EqualValues(t, uParams.EmailConfig.SendResolved, updated.EmailConfig.SendResolved)
+		assert.Nil(t, updated.EmailConfig)
+		assert.Equal(t, uParams.SlackConfig.Channel, updated.SlackConfig.Channel)
+		assert.EqualValues(t, uParams.SlackConfig.SendResolved, updated.SlackConfig.SendResolved)
 
 		actual, err := models.FindChannelByID(q, created.ID)
 		require.NoError(t, err)
-		assert.Equal(t, updated.Type, actual.Type)
-		assert.Equal(t, updated.Summary, actual.Summary)
-		assert.Equal(t, updated.Disabled, actual.Disabled)
-		assert.Equal(t, updated.EmailConfig, actual.EmailConfig)
+		assert.Equal(t, updated, actual)
 	})
 
 	t.Run("remove", func(t *testing.T) {
diff --git a/services/management/ia/channels_service.go b/services/management/ia/channels_service.go
index 348ff460f1..dda0de8a5b 100644
--- a/services/management/ia/channels_service.go
+++ b/services/management/ia/channels_service.go
@@ -142,6 +142,7 @@ func (s *ChannelsService) ChangeChannel(ctx context.Context, req *iav1beta1.Chan
 	}
 
 	params := &models.ChangeChannelParams{
+		Summary:  req.Summary,
 		Disabled: req.Disabled,
 	}
 
diff --git a/services/management/ia/common.go b/services/management/ia/common.go
index 6265c1603e..36c80430d5 100644
--- a/services/management/ia/common.go
+++ b/services/management/ia/common.go
@@ -31,10 +31,11 @@ import (
 )
 
 func convertParamUnit(u string) iav1beta1.ParamUnit {
-	// TODO: check possible variants.
 	switch strings.ToLower(u) {
-	case "%", "percentage":
+	case "%":
 		return iav1beta1.ParamUnit_PERCENTAGE
+	case "s":
+		return iav1beta1.ParamUnit_SECONDS
 	default:
 		return iav1beta1.ParamUnit_PARAM_UNIT_INVALID
 	}
diff --git a/vendor/github.com/percona/pmm/api/managementpb/ia/channels.pb.go b/vendor/github.com/percona/pmm/api/managementpb/ia/channels.pb.go
index beaa7a7e8c..221771ba9c 100644
--- a/vendor/github.com/percona/pmm/api/managementpb/ia/channels.pb.go
+++ b/vendor/github.com/percona/pmm/api/managementpb/ia/channels.pb.go
@@ -876,6 +876,8 @@ type ChangeChannelRequest struct {
 
 	// Machine-readable ID.
 	ChannelId string `protobuf:"bytes,1,opt,name=channel_id,json=channelId,proto3" json:"channel_id,omitempty"`
+	// Short human-readable summary. Empty value will not change it.
+	Summary string `protobuf:"bytes,2,opt,name=summary,proto3" json:"summary,omitempty"`
 	// Email configuration. Exactly one config should be set.
 	EmailConfig *EmailConfig `protobuf:"bytes,3,opt,name=email_config,json=emailConfig,proto3" json:"email_config,omitempty"`
 	// PagerDuty configuration. Exactly one config should be set.
@@ -927,6 +929,13 @@ func (x *ChangeChannelRequest) GetChannelId() string {
 	return ""
 }
 
+func (x *ChangeChannelRequest) GetSummary() string {
+	if x != nil {
+		return x.Summary
+	}
+	return ""
+}
+
 func (x *ChangeChannelRequest) GetEmailConfig() *EmailConfig {
 	if x != nil {
 		return x.EmailConfig
@@ -1210,72 +1219,73 @@ var file_managementpb_ia_channels_proto_rawDesc = []byte{
 	0x73, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x22, 0x33, 0x0a, 0x12, 0x41, 0x64, 0x64, 0x43, 0x68, 0x61,
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 }
 
 var (
diff --git a/vendor/github.com/percona/pmm/api/managementpb/ia/params.pb.go b/vendor/github.com/percona/pmm/api/managementpb/ia/params.pb.go
index 4f23eb04fd..f5b769870b 100644
--- a/vendor/github.com/percona/pmm/api/managementpb/ia/params.pb.go
+++ b/vendor/github.com/percona/pmm/api/managementpb/ia/params.pb.go
@@ -33,6 +33,8 @@ const (
 	ParamUnit_PARAM_UNIT_INVALID ParamUnit = 0
 	// %
 	ParamUnit_PERCENTAGE ParamUnit = 1
+	// s
+	ParamUnit_SECONDS ParamUnit = 2
 )
 
 // Enum value maps for ParamUnit.
@@ -40,10 +42,12 @@ var (
 	ParamUnit_name = map[int32]string{
 		0: "PARAM_UNIT_INVALID",
 		1: "PERCENTAGE",
+		2: "SECONDS",
 	}
 	ParamUnit_value = map[string]int32{
 		"PARAM_UNIT_INVALID": 0,
 		"PERCENTAGE":         1,
+		"SECONDS":            2,
 	}
 )
 
@@ -132,17 +136,18 @@ var File_managementpb_ia_params_proto protoreflect.FileDescriptor
 var file_managementpb_ia_params_proto_rawDesc = []byte{
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 }
 
 var (