diff --git a/edgecenter/resource_edgecenter_instance.go b/edgecenter/resource_edgecenter_instance.go
index cb0c3d68..4f6eaa8f 100644
--- a/edgecenter/resource_edgecenter_instance.go
+++ b/edgecenter/resource_edgecenter_instance.go
@@ -909,6 +909,32 @@ func resourceInstanceUpdate(ctx context.Context, d *schema.ResourceData, m inter
 		}
 	}
 
+	if d.HasChange("server_group") {
+		oldSGRaw, newSGRaw := d.GetChange("server_group")
+		oldSGID, newSGID := oldSGRaw.(string), newSGRaw.(string)
+
+		clientSG, err := CreateClient(provider, d, ServerGroupsPoint, VersionPointV1)
+		if err != nil {
+			return diag.FromErr(err)
+		}
+
+		// delete old server group
+		if oldSGID != "" {
+			err := deleteServerGroup(clientSG, client, instanceID, oldSGID)
+			if err != nil {
+				return diag.FromErr(err)
+			}
+		}
+
+		// add new server group if needed
+		if newSGID != "" {
+			err := addServerGroup(clientSG, client, instanceID, newSGID)
+			if err != nil {
+				return diag.FromErr(err)
+			}
+		}
+	}
+
 	if d.HasChange("volume") {
 		vClient, err := CreateClient(provider, d, VolumesPoint, VersionPointV1)
 		if err != nil {
diff --git a/edgecenter/utils.go b/edgecenter/utils.go
index 97733306..0d7f112f 100644
--- a/edgecenter/utils.go
+++ b/edgecenter/utils.go
@@ -37,6 +37,7 @@ import (
 	"github.com/Edge-Center/edgecentercloud-go/edgecenter/router/v1/routers"
 	"github.com/Edge-Center/edgecentercloud-go/edgecenter/securitygroup/v1/securitygroups"
 	typesSG "github.com/Edge-Center/edgecentercloud-go/edgecenter/securitygroup/v1/types"
+	"github.com/Edge-Center/edgecentercloud-go/edgecenter/servergroup/v1/servergroups"
 	"github.com/Edge-Center/edgecentercloud-go/edgecenter/subnet/v1/subnets"
 	"github.com/Edge-Center/edgecentercloud-go/edgecenter/task/v1/tasks"
 )
@@ -949,3 +950,57 @@ func attachSecurityGroupToInstance(sgClient, instanceClient *edgecloud.ServiceCl
 
 	return nil
 }
+
+func deleteServerGroup(sgClient, instanceClient *edgecloud.ServiceClient, instanceID, sgID string) error {
+	log.Printf("[DEBUG] remove server group from instance: %s", instanceID)
+	results, err := instances.RemoveServerGroup(instanceClient, instanceID).Extract()
+	if err != nil {
+		return fmt.Errorf("failed to remove server group %s from instance %s: %w", sgID, instanceID, err)
+	}
+
+	err = tasks.WaitTaskAndProcessResult(sgClient, results.Tasks[0], true, InstanceCreatingTimeout, func(task tasks.TaskID) error {
+		sgInfo, err := servergroups.Get(sgClient, sgID).Extract()
+		if err != nil {
+			return fmt.Errorf("failed to get server group %s: %w", sgID, err)
+		}
+		for _, instanceInfo := range sgInfo.Instances {
+			if instanceInfo.InstanceID == instanceID {
+				return fmt.Errorf("server group %s was not removed from instance %s", sgID, instanceID)
+			}
+		}
+		return nil
+	})
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func addServerGroup(sgClient, instanceClient *edgecloud.ServiceClient, instanceID, sgID string) error {
+	log.Printf("[DEBUG] add server group to instance: %s", instanceID)
+	results, err := instances.AddServerGroup(instanceClient, instanceID, instances.ServerGroupOpts{ServerGroupID: sgID}).Extract()
+	if err != nil {
+		return fmt.Errorf("failed to add server group %s to instance %s: %w", sgID, instanceID, err)
+	}
+
+	err = tasks.WaitTaskAndProcessResult(sgClient, results.Tasks[0], true, InstanceCreatingTimeout, func(task tasks.TaskID) error {
+		sgInfo, err := servergroups.Get(sgClient, sgID).Extract()
+		if err != nil {
+			return fmt.Errorf("cannot get server group with ID: %s. Error: %w", sgID, err)
+		}
+		for _, instanceInfo := range sgInfo.Instances {
+			if instanceInfo.InstanceID == instanceID {
+				return nil
+			}
+		}
+		return fmt.Errorf("the server group: %s was not added to the instance: %s. Error: %w", sgID, instanceID, err)
+	})
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/go.mod b/go.mod
index 1563a41a..4a33d667 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/Edge-Center/edgecenter-dns-sdk-go v0.1.0
 	github.com/Edge-Center/edgecenter-storage-sdk-go v0.1.0
 	github.com/Edge-Center/edgecentercdn-go v0.1.0
-	github.com/Edge-Center/edgecentercloud-go v0.1.0
+	github.com/Edge-Center/edgecentercloud-go v0.1.1
 	github.com/hashicorp/go-cty v1.4.1-0.20200414143053-d3edf31b6320
 	github.com/hashicorp/terraform v1.1.9
 	github.com/hashicorp/terraform-plugin-sdk/v2 v2.24.1
diff --git a/go.sum b/go.sum
index ab4c0b21..1fa72ee7 100644
--- a/go.sum
+++ b/go.sum
@@ -9,8 +9,8 @@ github.com/Edge-Center/edgecenter-storage-sdk-go v0.1.0 h1:5iKvDZsdkrvcQDIsh+tBS
 github.com/Edge-Center/edgecenter-storage-sdk-go v0.1.0/go.mod h1:3Y8B9zGwtXhjIWMyjWHcr7F9aXTzfOvq+VfcHZkYGfg=
 github.com/Edge-Center/edgecentercdn-go v0.1.0 h1:vPd7UMDhlNTRLD0xdWxvsUKRpYnnJ7vmnBmnq70r2s0=
 github.com/Edge-Center/edgecentercdn-go v0.1.0/go.mod h1:RwEyxwPAmxor1mZKUTa2bIU2p5qM6kcAofUkaE4O1V4=
-github.com/Edge-Center/edgecentercloud-go v0.1.0 h1:NwTCcTW2jL5tKFScb35BJi5XQQR84XLp3QEbJdNUpPQ=
-github.com/Edge-Center/edgecentercloud-go v0.1.0/go.mod h1:Z1c8cEGb/MrtBmP0fFIPEpOQEAL04f1GVaEibSlqx/E=
+github.com/Edge-Center/edgecentercloud-go v0.1.1 h1:B08+JMovdgBxoBiVEml0E2+8ivGxujkOPCEsAbcG+GU=
+github.com/Edge-Center/edgecentercloud-go v0.1.1/go.mod h1:Z1c8cEGb/MrtBmP0fFIPEpOQEAL04f1GVaEibSlqx/E=
 github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
 github.com/Microsoft/go-winio v0.4.16/go.mod h1:XB6nPKklQyQ7GC9LdcBEcBl8PF76WugXOPRXwdLnMv0=
 github.com/Microsoft/go-winio v0.5.0 h1:Elr9Wn+sGKPlkaBvwu4mTrxtmOp3F3yV9qhaHbXGjwU=