diff --git a/README.md b/README.md
index 97dfe53..478bc69 100644
--- a/README.md
+++ b/README.md
@@ -8,12 +8,13 @@ Terraform module to deploy a completely customizable OpenStack
 | Name | Version |
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement_terraform) | >= 1.0.0 |
+| <a name="requirement_openstack"></a> [openstack](#requirement_openstack) | ~> 1.54 |
 
 ### Providers
 
 | Name | Version |
 |------|---------|
-| <a name="provider_openstack"></a> [openstack](#provider_openstack) | n/a |
+| <a name="provider_openstack"></a> [openstack](#provider_openstack) | ~> 1.54 |
 
 ### Modules
 
diff --git a/main.tf b/main.tf
index fdb9b0b..4f71fd9 100644
--- a/main.tf
+++ b/main.tf
@@ -5,7 +5,8 @@ terraform {
   # providers requirements
   required_providers {
     openstack = {
-      source = "terraform-provider-openstack/openstack"
+      source  = "terraform-provider-openstack/openstack"
+      version = "~> 1.54"
     }
   }
 }