diff --git a/VERSION b/VERSION
index 0d15162..9ad3f36 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.0-rc.3
+0.1.0-rc.4
diff --git a/ci/template-test/main.tf b/ci/template-test/main.tf
index ebe1dc0..f683194 100644
--- a/ci/template-test/main.tf
+++ b/ci/template-test/main.tf
@@ -67,7 +67,7 @@ module "testrdp2" {
 
   msg_vpn_name              = "default"
   queue_name                = solacebroker_msg_vpn_queue.myqueue.queue_name
-  url                       = "http://[2001:db8:3333:4444:5555:6666:7777:8888]:12345/$${msgId()}"
+  url                       = "HTTP://[2001:db8:3333:4444:5555:6666:7777:8888]:12345/$${msgId()}"
   rest_delivery_point_name  = "my_rdp2"
   request_headers           = module.testrdp.request_headers
   protected_request_headers = module.testrdp.protected_request_headers
diff --git a/internal/gen-template/variables.tf b/internal/gen-template/variables.tf
index 084e84b..7fe8ae2 100644
--- a/internal/gen-template/variables.tf
+++ b/internal/gen-template/variables.tf
@@ -11,7 +11,7 @@ variable "url" {
   description = "The URL that the messages should be delivered to. The path portion of the URL may contain substitution expressions"
   type        = string
   validation {
-    condition     = can(regex("https?://.*", var.url))
+    condition     = can(regex("https?://.*", lower(var.url)))
     error_message = "The URL must be a valid URL"
   }
 }
diff --git a/variables.tf b/variables.tf
index 8476811..8b88d93 100644
--- a/variables.tf
+++ b/variables.tf
@@ -25,7 +25,7 @@ variable "url" {
   description = "The URL that the messages should be delivered to. The path portion of the URL may contain substitution expressions"
   type        = string
   validation {
-    condition     = can(regex("https?://.*", var.url))
+    condition     = can(regex("https?://.*", lower(var.url)))
     error_message = "The URL must be a valid URL"
   }
 }