diff --git a/src/main/python/ddadevops/domain/terraform.py b/src/main/python/ddadevops/domain/terraform.py
index a865f3b..03fd5c9 100644
--- a/src/main/python/ddadevops/domain/terraform.py
+++ b/src/main/python/ddadevops/domain/terraform.py
@@ -1,4 +1,4 @@
-from typing import List, Set
+from typing import List, Set, Dict, Any
 from pathlib import Path
 from .common import (
     Validateable,
@@ -34,7 +34,7 @@ class TerraformDomain(Validateable):
         self.tf_use_package_common_files = inp.get("tf_use_package_common_files", True)
 
         provider_types = TerraformDomain.parse_provider_types(self.tf_provider_types)
-        self.providers = {}
+        self.providers: Dict[ProviderType, Any] = {}
         if ProviderType.DIGITALOCEAN in provider_types:
             self.providers[ProviderType.DIGITALOCEAN] = Digitalocean(inp)
         if ProviderType.HETZNER in provider_types: