diff --git a/cumulus/main.tf b/cumulus/main.tf
index f2e51a6..c782dd2 100644
--- a/cumulus/main.tf
+++ b/cumulus/main.tf
@@ -1,5 +1,5 @@
 module "cumulus" {
-  source = "https://github.com/nasa/cumulus/releases/download/v18.5.0/terraform-aws-cumulus.zip/tf-modules/cumulus"
+  source = "https://github.com/nasa/cumulus/releases/download/v18.5.0/terraform-aws-cumulus.zip//tf-modules/cumulus"
 
   cumulus_message_adapter_lambda_layer_version_arn = data.terraform_remote_state.daac.outputs.cma_layer_arn
 
diff --git a/data-persistence/main.tf b/data-persistence/main.tf
index 41e30fc..7b82bdd 100644
--- a/data-persistence/main.tf
+++ b/data-persistence/main.tf
@@ -1,5 +1,5 @@
 module "data_persistence" {
-  source = "https://github.com/nasa/cumulus/releases/download/v18.5.0/terraform-aws-cumulus.zip/tf-modules/data-persistence"
+  source = "https://github.com/nasa/cumulus/releases/download/v18.5.0/terraform-aws-cumulus.zip//tf-modules/data-persistence"
 
   prefix                = local.prefix
   subnet_ids            = data.aws_subnets.subnet_ids.ids