diff --git a/README.md b/README.md
index 0c490b19..81883765 100644
--- a/README.md
+++ b/README.md
@@ -248,7 +248,7 @@ Optionally, you need the following permissions to attach Access Management tags
 | <a name="module_attach_sg_to_master_vpe"></a> [attach\_sg\_to\_master\_vpe](#module\_attach\_sg\_to\_master\_vpe) | terraform-ibm-modules/security-group/ibm | 2.6.2 |
 | <a name="module_attach_sg_to_registry_vpe"></a> [attach\_sg\_to\_registry\_vpe](#module\_attach\_sg\_to\_registry\_vpe) | terraform-ibm-modules/security-group/ibm | 2.6.2 |
 | <a name="module_cbr_rule"></a> [cbr\_rule](#module\_cbr\_rule) | terraform-ibm-modules/cbr/ibm//modules/cbr-rule-module | 1.31.0 |
-| <a name="module_cos_instance"></a> [cos\_instance](#module\_cos\_instance) | terraform-ibm-modules/cos/ibm | 8.21.18 |
+| <a name="module_cos_instance"></a> [cos\_instance](#module\_cos\_instance) | terraform-ibm-modules/cos/ibm | 8.21.20 |
 
 ### Resources
 
diff --git a/examples/fscloud/main.tf b/examples/fscloud/main.tf
index 22dce7b1..457d2fbd 100644
--- a/examples/fscloud/main.tf
+++ b/examples/fscloud/main.tf
@@ -16,7 +16,7 @@ module "resource_group" {
 
 module "cos_fscloud" {
   source                        = "terraform-ibm-modules/cos/ibm"
-  version                       = "8.21.18"
+  version                       = "8.21.20"
   resource_group_id             = module.resource_group.resource_group_id
   create_cos_bucket             = false
   cos_instance_name             = "${var.prefix}-cos"
@@ -30,7 +30,7 @@ module "cos_fscloud" {
 
 module "flowlogs_bucket" {
   source  = "terraform-ibm-modules/cos/ibm//modules/buckets"
-  version = "8.21.18"
+  version = "8.21.20"
 
   bucket_configs = [
     {
@@ -52,7 +52,7 @@ module "flowlogs_bucket" {
 module "vpc" {
   depends_on        = [module.flowlogs_bucket]
   source            = "terraform-ibm-modules/landing-zone-vpc/ibm"
-  version           = "7.23.4"
+  version           = "7.23.5"
   resource_group_id = module.resource_group.resource_group_id
   region            = var.region
   prefix            = var.prefix
diff --git a/main.tf b/main.tf
index 08bfaf16..a017e72d 100644
--- a/main.tf
+++ b/main.tf
@@ -108,7 +108,7 @@ module "cos_instance" {
   count = var.enable_registry_storage && !var.use_existing_cos ? 1 : 0
 
   source                 = "terraform-ibm-modules/cos/ibm"
-  version                = "8.21.18"
+  version                = "8.21.20"
   cos_instance_name      = local.cos_name
   resource_group_id      = var.resource_group_id
   cos_plan               = local.cos_plan
diff --git a/tests/existing-resources/main.tf b/tests/existing-resources/main.tf
index eb628f1b..5a15806c 100644
--- a/tests/existing-resources/main.tf
+++ b/tests/existing-resources/main.tf
@@ -14,7 +14,7 @@ module "resource_group" {
 
 module "vpc" {
   source            = "terraform-ibm-modules/landing-zone-vpc/ibm"
-  version           = "7.23.4"
+  version           = "7.23.5"
   resource_group_id = module.resource_group.resource_group_id
   region            = var.region
   name              = "vpc"
@@ -38,7 +38,7 @@ module "vpc" {
 
 module "cos" {
   source                 = "terraform-ibm-modules/cos/ibm"
-  version                = "8.21.18"
+  version                = "8.21.20"
   resource_group_id      = module.resource_group.resource_group_id
   region                 = var.region
   cos_instance_name      = "${var.prefix}-cos"