diff --git a/Readme.md b/Readme.md
index fda8514..549d31c 100644
--- a/Readme.md
+++ b/Readme.md
@@ -16,7 +16,7 @@ This Terraform module provides resources to manage GitLab groups, projects, inte
 ## Requirements
 
 - Terraform 1.5.7 or higher.
-- GitLab Provider for Terraform 17.3.0 or higher.
+- GitLab Provider for Terraform 18.0.0 or higher.
 
 ## Usage
 
@@ -41,20 +41,20 @@ This Terraform module provides resources to manage GitLab groups, projects, inte
        settings:
          visibility: private
          description: "Parent group for user roles subgroups"
-    ```
+   ```
 
 2. **Projects Configuration**
 
-    Define your GitLab projects in YAML files located in the projects directory. Example projects/projects.yaml:
+   Define your GitLab projects in YAML files located in the projects directory. Example projects/projects.yaml:
 
-    ```yaml
-    projects:
-    - name: project-alpha
-        create: true
-        visibility: private
-        description: "Alpha project description"
-        settings: {}
-    ```
+   ```yaml
+   projects:
+   - name: project-alpha
+       create: true
+       visibility: private
+       description: "Alpha project description"
+       settings: {}
+   ```
 
 ### Step 2: Use the Module
 
@@ -71,17 +71,17 @@ Create a main.tf file and use the module to manage your GitLab resources:
 
 ### Step 3: Initialize and Apply
 
-1.	**Initialize Terraform:**
+1. **Initialize Terraform:**
 
-    ```sh
-    terraform init
-    ```
+   ```sh
+   terraform init
+   ```
 
-2.	**Apply the Terraform configuration:**
+2. **Apply the Terraform configuration:**
 
-    ```sh
-    terraform apply
-    ```
+   ```sh
+   terraform apply
+   ```
 
 ### Step 4: Verify Outputs
 
@@ -114,7 +114,6 @@ You can find examples in the examples/ directory for different use cases, such a
 - [terraform](https://github.com/opsworks-co/terraform-gitlab/tree/main/examples/terraform) - How to use module with terraform
 - [terragrunt](https://github.com/opsworks-co/terraform-gitlab/tree/main/examples/terragrunt) - How to use module with terragrunt
 
-
 ## Authors
 
 Module is maintained by [Serhii Kaidalov](https://github.com/wiseelf).
diff --git a/main.tf b/main.tf
index 8bffb43..44c7934 100644
--- a/main.tf
+++ b/main.tf
@@ -1101,6 +1101,7 @@ resource "gitlab_project_variable" "this_sensitive" {
   value             = sensitive(each.value.variable.value)
   protected         = lookup(each.value.variable, "protected", false)
   masked            = lookup(each.value.variable, "masked", false)
+  hidden            = lookup(each.value.variable, "hidden", false)
   environment_scope = lookup(each.value.variable, "environment_scope", "*")
   description       = lookup(each.value.variable, "description", null)
   raw               = lookup(each.value.variable, "raw", false)
@@ -1437,7 +1438,6 @@ resource "gitlab_integration_jira" "this" {
   jira_issue_transition_automatic = each.value.integration.jira_issue_transition_automatic
   jira_issue_transition_id        = each.value.integration.jira_issue_transition_id
   merge_requests_events           = each.value.integration.merge_requests_events
-  project_key                     = each.value.integration.project_key
   project_keys                    = each.value.integration.project_keys
   use_inherited_settings          = each.value.integration.use_inherited_settings
 }
diff --git a/versions.tf b/versions.tf
index b2a98bb..7653458 100644
--- a/versions.tf
+++ b/versions.tf
@@ -2,7 +2,7 @@ terraform {
   required_providers {
     gitlab = {
       source  = "gitlabhq/gitlab"
-      version = "= 17.9.0"
+      version = "= 18.0.0"
     }
   }
   required_version = ">= 1.4.0"