diff --git a/cd/project.py b/cd/project.py
index 51971d1..bdb2426 100644
--- a/cd/project.py
+++ b/cd/project.py
@@ -1,4 +1,10 @@
+from __future__ import annotations
+
 from pathlib import Path
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from cd.projects import Projects
 
 BRANCH = [
     "GITHUB_REF_NAME",
@@ -15,7 +21,7 @@ ROOT = [
 
 
 class Project:
-    def __init__(self, projects) -> None:
+    def __init__(self: Project, projects: Projects) -> None:
         self.projects = projects
         # branch
         for variable in BRANCH:
diff --git a/cd/projects.py b/cd/projects.py
index 9094c20..a1ca31f 100644
--- a/cd/projects.py
+++ b/cd/projects.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from pathlib import Path
 
 GROUP_AND_NAME = [
@@ -11,7 +13,7 @@ SERVER_URL = [
 
 
 class Projects:
-    def __init__(self, environment) -> None:
+    def __init__(self: Projects, environment) -> None:
         self.environment = environment
         # group, name
         for variable in GROUP_AND_NAME: