diff --git a/terraform/demo/main.tf b/terraform/demo/main.tf
index fd351bc49..3a8653fcf 100644
--- a/terraform/demo/main.tf
+++ b/terraform/demo/main.tf
@@ -7,7 +7,7 @@ locals {
 }
 
 module "redis" {
-  source = "github.com/18f/terraform-cloudgov//redis"
+  source = "github.com/18f/terraform-cloudgov//redis?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password
@@ -20,7 +20,7 @@ module "redis" {
 }
 
 module "logo_upload_bucket" {
-  source = "github.com/18f/terraform-cloudgov//s3"
+  source = "github.com/18f/terraform-cloudgov//s3?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password
diff --git a/terraform/production/main.tf b/terraform/production/main.tf
index 88ccb5ae5..f40c3bba6 100644
--- a/terraform/production/main.tf
+++ b/terraform/production/main.tf
@@ -7,7 +7,7 @@ locals {
 }
 
 module "redis" {
-  source = "github.com/18f/terraform-cloudgov//redis"
+  source = "github.com/18f/terraform-cloudgov//redis?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password
@@ -20,7 +20,7 @@ module "redis" {
 }
 
 module "logo_upload_bucket" {
-  source = "github.com/18f/terraform-cloudgov//s3"
+  source = "github.com/18f/terraform-cloudgov//s3?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password
@@ -55,7 +55,7 @@ module "logo_upload_bucket" {
 #     `cf create-domain TKTK-org-name TKTK-production-domain-name`
 ###########################################################################
 # module "domain" {
-#   source = "github.com/18f/terraform-cloudgov//domain"
+#   source = "github.com/18f/terraform-cloudgov//domain?ref=v0.1.0"
 #
 #   cf_user          = var.cf_user
 #   cf_password      = var.cf_password
diff --git a/terraform/sandbox/main.tf b/terraform/sandbox/main.tf
index 766aa2f29..390dfc5a6 100644
--- a/terraform/sandbox/main.tf
+++ b/terraform/sandbox/main.tf
@@ -7,7 +7,7 @@ locals {
 }
 
 module "redis" {
-  source = "github.com/18f/terraform-cloudgov//redis"
+  source = "github.com/18f/terraform-cloudgov//redis?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password
@@ -20,7 +20,7 @@ module "redis" {
 }
 
 module "logo_upload_bucket" {
-  source = "github.com/18f/terraform-cloudgov//s3"
+  source = "github.com/18f/terraform-cloudgov//s3?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password
diff --git a/terraform/staging/main.tf b/terraform/staging/main.tf
index 4df6471e5..70f41fbd7 100644
--- a/terraform/staging/main.tf
+++ b/terraform/staging/main.tf
@@ -7,7 +7,7 @@ locals {
 }
 
 module "redis" {
-  source = "github.com/18f/terraform-cloudgov//redis"
+  source = "github.com/18f/terraform-cloudgov//redis?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password
@@ -20,7 +20,7 @@ module "redis" {
 }
 
 module "logo_upload_bucket" {
-  source = "github.com/18f/terraform-cloudgov//s3"
+  source = "github.com/18f/terraform-cloudgov//s3?ref=v0.1.0"
 
   cf_user          = var.cf_user
   cf_password      = var.cf_password