diff --git a/ra_aid/__main__.py b/ra_aid/__main__.py
index 72df89b..6c2489f 100644
--- a/ra_aid/__main__.py
+++ b/ra_aid/__main__.py
@@ -128,6 +128,11 @@ Examples:
         default=DEFAULT_RECURSION_LIMIT,
         help="Maximum recursion depth for agent operations (default: 100)",
     )
+    parser.add_argument(
+        '--aider-config',
+        type=str,
+        help='Specify the aider config file path'
+    )
 
     if args is None:
         args = sys.argv[1:]
@@ -321,6 +326,7 @@ def main():
             "research_only": args.research_only,
             "cowboy_mode": args.cowboy_mode,
             "web_research_enabled": web_research_enabled,
+            "aider_config": args.aider_config,
             "limit_tokens": args.disable_limit_tokens,
         }
 
diff --git a/ra_aid/tools/programmer.py b/ra_aid/tools/programmer.py
index 62e8b1f..111e292 100644
--- a/ra_aid/tools/programmer.py
+++ b/ra_aid/tools/programmer.py
@@ -45,6 +45,10 @@ Returns: { "output": stdout+stderr, "return_code": 0 if success, "success": True
         "--no-suggest-shell-commands",
     ]
 
+    # Add config file if specified
+    if 'config' in _global_memory and _global_memory['config'].get('aider_config'):
+        command.extend(['--config', _global_memory['config']['aider_config']])
+
     # if environment variable AIDER_FLAGS exists then parse
     if 'AIDER_FLAGS' in os.environ:
         # wrap in try catch in case of any error and log the error
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2103569..3095c4f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,3 +1,4 @@
 pytest-timeout>=2.2.0
 pytest>=7.0.0
 pytest-cov>=4.1.0
+pytest-mock>=4.0.0
diff --git a/tests/ra_aid/test_programmer.py b/tests/ra_aid/test_programmer.py
index fc99963..3fdf0f3 100644
--- a/tests/ra_aid/test_programmer.py
+++ b/tests/ra_aid/test_programmer.py
@@ -1,5 +1,5 @@
 import pytest
-from ra_aid.tools.programmer import parse_aider_flags
+from ra_aid.tools.programmer import parse_aider_flags, run_programming_task
 
 # Test cases for parse_aider_flags function
 test_cases = [
@@ -51,3 +51,21 @@ def test_parse_aider_flags(input_flags, expected, description):
     """Table-driven test for parse_aider_flags function."""
     result = parse_aider_flags(input_flags)
     assert result == expected, f"Failed test case: {description}"
+
+def test_aider_config_flag(mocker):
+    """Test that aider config flag is properly included in the command when specified."""
+    mock_memory = {
+        'config': {'aider_config': '/path/to/config.yml'},
+        'related_files': {}
+    }
+    mocker.patch('ra_aid.tools.programmer._global_memory', mock_memory)
+    
+    # Mock the run_interactive_command to capture the command that would be run
+    mock_run = mocker.patch('ra_aid.tools.programmer.run_interactive_command', return_value=(b'', 0))
+    
+    run_programming_task("test instruction")
+    
+    args = mock_run.call_args[0][0]  # Get the first positional arg (command list)
+    assert '--config' in args
+    config_index = args.index('--config')
+    assert args[config_index + 1] == '/path/to/config.yml'