diff --git a/brickflow/__init__.py b/brickflow/__init__.py
index ba635e03..ae269277 100644
--- a/brickflow/__init__.py
+++ b/brickflow/__init__.py
@@ -43,9 +43,22 @@ def _insert_before_path_startswith(
     arr.append(new_element)
 
 
+class ConfigFileType(Enum):
+    YAML = "yaml"
+    YML = "yml"
+
+
 class BrickflowProjectConstants(Enum):
-    DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME = ".brickflow-project-root.yml"
-    DEFAULT_MULTI_PROJECT_CONFIG_FILE_NAME = "brickflow-multi-project.yml"
+    DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME = ".brickflow-project-root"
+    DEFAULT_MULTI_PROJECT_CONFIG_FILE_NAME = "brickflow-multi-project"
+    DEFAULT_CONFIG_FILE_TYPE = ConfigFileType.YML.value
+
+
+def get_config_file_type(brickflow_root: str) -> ConfigFileType:
+    for config_file_type in ConfigFileType:
+        if brickflow_root.endswith(config_file_type.value):
+            return config_file_type
+    return ConfigFileType.YAML
 
 
 class BrickflowEnvVars(Enum):
@@ -339,6 +352,8 @@ def get_bundles_project_env() -> str:
     "BrickflowDefaultEnvs",
     "get_default_log_handler",
     "get_brickflow_version",
+    "ConfigFileType",
+    "get_config_file_type",
     "BrickflowProjectConstants",
     "BrickflowProjectDeploymentSettings",
 ]
diff --git a/brickflow/cli/configure.py b/brickflow/cli/configure.py
index 2375361d..120ec0c9 100644
--- a/brickflow/cli/configure.py
+++ b/brickflow/cli/configure.py
@@ -102,7 +102,10 @@ def create_entry_point(working_dir: str, data: str) -> None:
 
 
 def create_brickflow_project_root_marker() -> None:
-    path = Path(BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME.value)
+    path = Path(
+        f"{BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME.value}."
+        f"{BrickflowProjectConstants.DEFAULT_CONFIG_FILE_TYPE.value}"
+    )
     if path.exists():
         click.echo(f"Path: {str(path.absolute())} already exists...")
         # path = Path(working_dir) / "entrypoint.py.new"
diff --git a/brickflow/cli/projects.py b/brickflow/cli/projects.py
index 1a60aa49..47efb59c 100644
--- a/brickflow/cli/projects.py
+++ b/brickflow/cli/projects.py
@@ -1,6 +1,5 @@
 import contextlib
 import os
-from enum import Enum
 from pathlib import Path
 from typing import Dict, Optional, List, Generator, Any, Callable
 
@@ -15,6 +14,8 @@
     _ilog,
     BrickflowProjectDeploymentSettings,
     ctx,
+    ConfigFileType,
+    get_config_file_type,
 )
 from brickflow.cli.bundles import (
     bundle_deploy,
@@ -83,11 +84,6 @@ def has_projects(self) -> bool:
         return self.project_roots is not None and len(self.project_roots) > 0
 
 
-class ConfigFileType(Enum):
-    YAML = "yaml"
-    JSON = "json"  # unsupported
-
-
 class MultiProjectManager:
     def __init__(
         self,
@@ -95,7 +91,7 @@ def __init__(
         file_type: ConfigFileType = ConfigFileType.YAML,
     ) -> None:
         self.file_type = file_type
-        self._config_file: Path = Path(config_file_name)
+        self._config_file: Path = Path(f"{config_file_name}.{file_type.value}")
         self._brickflow_multi_project_config: BrickflowMultiRootProjectConfig
         self._brickflow_multi_project_config = (
             self._load_config()
@@ -127,7 +123,10 @@ def _load_config(self) -> BrickflowMultiRootProjectConfig:
             return BrickflowMultiRootProjectConfig(project_roots={})
 
     def _root_config_path(self, root: str) -> Path:
-        root_file = BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME.value
+        root_file = (
+            f"{BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME.value}."
+            f"{BrickflowProjectConstants.DEFAULT_CONFIG_FILE_TYPE.value}"
+        )
         return self._config_file.parent / root / root_file
 
     def _load_roots(self) -> Dict[str, BrickflowRootProjectConfig]:
@@ -233,22 +232,32 @@ class BrickflowRootNotFound(Exception):
 
 def get_brickflow_root(current_path: Optional[Path] = None) -> Path:
     current_dir = Path(current_path or get_notebook_ws_path(ctx.dbutils) or os.getcwd())
-    potential_config_file_path = (
-        current_dir
-        / BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_CONFIG_FILE_NAME.value
-    )
-    if potential_config_file_path.exists():
-        return potential_config_file_path
-    elif current_dir.parent == current_dir:
+
+    potential_config_files = [
+        f"{BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME.value}.{cfg_type.value}"
+        for cfg_type in ConfigFileType
+    ]
+    potential_config_file_paths = [current_dir / p for p in potential_config_files]
+
+    for potential_config_file_path in potential_config_file_paths:
+        if potential_config_file_path.exists():
+            return potential_config_file_path
+
+    if current_dir.parent == current_dir:
         # Reached the filesystem root, return just raw file value
         return Path(
-            BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_CONFIG_FILE_NAME.value
+            f"{BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_CONFIG_FILE_NAME.value}."
+            f"{BrickflowProjectConstants.DEFAULT_CONFIG_FILE_TYPE.value}"
         )
     else:
         return get_brickflow_root(current_dir.parent)
 
 
-multi_project_manager = MultiProjectManager(config_file_name=str(get_brickflow_root()))
+brickflow_root_path = get_brickflow_root()
+config_file_type = get_config_file_type(str(brickflow_root_path))
+multi_project_manager = MultiProjectManager(
+    config_file_name=str(brickflow_root_path), file_type=config_file_type
+)
 
 
 def initialize_project_entrypoint(
diff --git a/brickflow/resolver/__init__.py b/brickflow/resolver/__init__.py
index 802ae328..4a5da1ed 100644
--- a/brickflow/resolver/__init__.py
+++ b/brickflow/resolver/__init__.py
@@ -37,8 +37,10 @@ def go_up_till_brickflow_root(cur_path: str) -> str:
     path = pathlib.Path(cur_path).resolve()
 
     valid_roots = [
-        BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME.value,
-        BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_CONFIG_FILE_NAME.value,
+        f"{BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_ROOT_FILE_NAME.value}."
+        f"{BrickflowProjectConstants.DEFAULT_CONFIG_FILE_TYPE.value}",
+        f"{BrickflowProjectConstants.DEFAULT_MULTI_PROJECT_CONFIG_FILE_NAME.value}."
+        f"{BrickflowProjectConstants.DEFAULT_CONFIG_FILE_TYPE.value}",
     ]
 
     # recurse to see if there is a brickflow root and return the path