diff --git a/build.py b/build.py
index ad69202..e5d9ef6 100644
--- a/build.py
+++ b/build.py
@@ -27,11 +27,12 @@ use_plugin("python.distutils")
 default_task = "publish"
 
 name = "ddadevops"
-version = "0.4.0.dev15"
+version = "0.4.0.dev18"
 summary = "tools to support builds combining gopass, terraform, dda-pallet, aws & hetzner-cloud"
 description = __doc__
 authors = [Author("meissa GmbH", "buero@meissa-gmbh.de")]
 url = "https://github.com/DomainDrivenArchitecture/dda-devops-build"
+requires_python = ">=2.7,!=3.0,!=3.1,!=3.2,!=3.3,!=3.4,<3.9"
 license = "Apache Software License"
 
 @init
@@ -52,7 +53,17 @@ def initialize(project):
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
+        'Operating System :: POSIX :: Linux',
+        'Operating System :: OS Independent',
+        'Development Status :: 5 - Production/Stable',
+        'Environment :: Console',
+        'Intended Audience :: Developers',
+        'License :: OSI Approved :: Apache Software License',
         'Topic :: Software Development :: Build Tools',
+        'Topic :: Software Development :: Quality Assurance',
+        'Topic :: Software Development :: Testing'
         ])
diff --git a/src/main/python/ddadevops/aws_mixin.py b/src/main/python/ddadevops/aws_mixin.py
index 6a3068c..d803280 100644
--- a/src/main/python/ddadevops/aws_mixin.py
+++ b/src/main/python/ddadevops/aws_mixin.py
@@ -15,6 +15,7 @@ class AwsMixin(DevopsTerraformBuild):
 
     def __init__(self, project, config):
         super().__init__(project, config)
+        project.build_depends_on('boto3')
         aws_mixin_config = config['AwsMixin']
         self.account_name = aws_mixin_config['account_name']
 
@@ -41,6 +42,17 @@ class AwsMixin(DevopsTerraformBuild):
         tf.plan(capture_output=False, var=self.project_vars(),
                 var_file=self.backend_config())
 
+    def apply(self, p_auto_approve=False):
+        tf = self.init_client()
+        tf.apply(capture_output=False, auto_approve=p_auto_approve,
+                 var=self.project_vars(), var_file=self.backend_config())
+        self.write_output(tf)
+
+    def destroy(self, p_auto_approve=False):
+        tf = self.init_client()
+        tf.destroy(capture_output=False, auto_approve=p_auto_approve,
+                   var=self.project_vars(), var_file=self.backend_config())
+
     def get_username_from_account(self, p_account_name):
         login_id = execute('cat ~/.aws/accounts | grep -A 2 "\[' + p_account_name +
                            '\]"  | grep username | awk -F= \'{print $2}\'', shell=True)
diff --git a/src/main/python/ddadevops/devops_terraform_build.py b/src/main/python/ddadevops/devops_terraform_build.py
index e84dfa7..46bd5ce 100644
--- a/src/main/python/ddadevops/devops_terraform_build.py
+++ b/src/main/python/ddadevops/devops_terraform_build.py
@@ -26,6 +26,7 @@ class DevopsTerraformBuild(DevopsBuild):
 
     def __init__(self, project, config):
         super().__init__(project, config)
+        project.build_depends_on('python-terraform')
         self.additional_vars = config['additional_vars']
         self.terraform_build_commons_dir_name = config['terraform_build_commons_dir_name']
         self.output_json_name = config['output_json_name']