diff --git a/README.md b/README.md
index 6924d53..47f7150 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,10 @@ Terraform module to create Terraform drift, plan, and apply CodePipelines.
 
 ## Change Log
 
+### 3.1.0
+- added global tags to `build-drift` CloudWatch log group
+- added `log_retention_in_days` variable to allow customization of how long logs are kept
+
 ### 3.0.1
 - Added tags to `build-plan` CodeBuild project, which was missed in v3.0.0 release.
 
diff --git a/apply-pipeline.tf b/apply-pipeline.tf
index 3e76bb7..61267e6 100644
--- a/apply-pipeline.tf
+++ b/apply-pipeline.tf
@@ -86,13 +86,13 @@ resource "aws_codepipeline" "apply-pipeline" {
 
 resource "aws_cloudwatch_log_group" "build-plan" {
   name              = local.build_project_name_plan
-  retention_in_days = 90
+  retention_in_days = var.log_retention_in_days
   tags              = var.global_tags
 }
 
 resource "aws_cloudwatch_log_group" "build-apply" {
   name              = local.build_project_name_apply
-  retention_in_days = 90
+  retention_in_days = var.log_retention_in_days
   tags              = var.global_tags
 }
 
diff --git a/drift-pipeline.tf b/drift-pipeline.tf
index 20efb6a..e9d08b8 100644
--- a/drift-pipeline.tf
+++ b/drift-pipeline.tf
@@ -49,7 +49,8 @@ resource "aws_codepipeline" "drift-pipeline" {
 
 resource "aws_cloudwatch_log_group" "build-drift" {
   name              = local.build_project_name_drift
-  retention_in_days = 90
+  retention_in_days = log_retention_in_days
+  tags              = var.global_tags
 }
 
 resource "aws_codebuild_project" "build-drift" {
diff --git a/variables.tf b/variables.tf
index 36dcf1b..3288dd5 100644
--- a/variables.tf
+++ b/variables.tf
@@ -73,3 +73,9 @@ variable "tf_log" {
   description = "value for the TF_LOG variable in Terraform plan/apply operations"
   default     = null
 }
+
+variable "log_retention_in_days" {
+  type        = number
+  description = "number of days to retain CodePipeline and CodeBuild logs"
+  default     = 90
+}