diff --git a/examples/advanced/main.tf b/examples/advanced/main.tf
index dcebfc85..24ae6fa8 100644
--- a/examples/advanced/main.tf
+++ b/examples/advanced/main.tf
@@ -91,7 +91,7 @@ module "key_protect" {
 
 module "cos" {
   source            = "terraform-ibm-modules/cos/ibm"
-  version           = "9.1.0"
+  version           = "10.1.15"
   resource_group_id = module.resource_group.resource_group_id
   cos_instance_name = "${var.prefix}-cos"
   cos_tags          = var.resource_tags
@@ -104,7 +104,7 @@ locals {
 
 module "buckets" {
   source  = "terraform-ibm-modules/cos/ibm//modules/buckets"
-  version = "9.1.0"
+  version = "10.1.15"
   bucket_configs = [
     {
       bucket_name                   = local.at_bucket_name
diff --git a/solutions/fully-configurable/main.tf b/solutions/fully-configurable/main.tf
index 500bcbd1..83544d9f 100644
--- a/solutions/fully-configurable/main.tf
+++ b/solutions/fully-configurable/main.tf
@@ -257,7 +257,7 @@ module "cos_bucket" {
   }
   count   = length(coalesce(local.buckets_config, [])) != 0 ? 1 : 0 # no need to call COS module if consumer is using existing COS bucket
   source  = "terraform-ibm-modules/cos/ibm//modules/buckets"
-  version = "9.1.0"
+  version = "10.1.15"
   bucket_configs = [
     for value in local.buckets_config :
     {
diff --git a/tests/resources/main.tf b/tests/resources/main.tf
index bfc89c22..e55c857a 100644
--- a/tests/resources/main.tf
+++ b/tests/resources/main.tf
@@ -16,7 +16,7 @@ module "resource_group" {
 
 module "cos" {
   source            = "terraform-ibm-modules/cos/ibm"
-  version           = "9.1.0"
+  version           = "10.1.15"
   resource_group_id = module.resource_group.resource_group_id
   cos_instance_name = "${var.prefix}-cos"
   cos_tags          = var.resource_tags
@@ -34,7 +34,7 @@ locals {
 
 module "buckets" {
   source  = "terraform-ibm-modules/cos/ibm//modules/buckets"
-  version = "9.1.0"
+  version = "10.1.15"
   bucket_configs = [
     {
       bucket_name            = local.logs_bucket_name