diff --git a/docker-manager/README.md b/docker-manager/README.md
index 58f8adb..041abe6 100644
--- a/docker-manager/README.md
+++ b/docker-manager/README.md
@@ -14,7 +14,7 @@ A Python command-line application to manage Docker containers defined in subdire
 - Python 3
 - Docker and Docker Compose (plugin) installed.
 - A `~/docker/` directory containing subdirectories for each of your projects.
-- Each project subdirectory must contain a `docker-compose.yml` or `compose.yml` file.
+- Each project subdirectory must contain a `docker-compose.yml`, `docker-compose.yaml`, `compose.yml`, or `compose.yaml` file.
 
 ## Installation
 
diff --git a/docker-manager/docker-manager.py b/docker-manager/docker-manager.py
index d343f98..da48cec 100755
--- a/docker-manager/docker-manager.py
+++ b/docker-manager/docker-manager.py
@@ -3,7 +3,7 @@
 Docker Manager Application
 
 This script manages Docker containers defined in subdirectories of `~/docker/`.
-Each subdirectory is treated as a project and must contain a `docker-compose.yml` or `compose.yml`.
+Each subdirectory is treated as a project and must contain a `docker-compose.yml`, `docker-compose.yaml`, `compose.yml`, or `compose.yaml`.
 
 Usage Examples:
     1. List all running containers:
@@ -50,7 +50,10 @@ def get_projects():
 
     for item in DOCKER_ROOT.iterdir():
         if item.is_dir():
-            if (item / "docker-compose.yml").exists() or (item / "compose.yml").exists():
+            if (item / "docker-compose.yml").exists() or \
+               (item / "docker-compose.yaml").exists() or \
+               (item / "compose.yml").exists() or \
+               (item / "compose.yaml").exists():
                 projects[item.name] = item
     return projects