diff --git a/aider/watch.py b/aider/watch.py
index c2f816c24..c0bc79af4 100644
--- a/aider/watch.py
+++ b/aider/watch.py
@@ -43,6 +43,13 @@ def is_source_file(path: Path) -> bool:
         ".go",
         ".rs",
         ".php",
+        # -- style comments
+        ".sql",
+        ".hs",  # Haskell
+        ".lua",
+        ".elm",
+        ".vhd", # VHDL
+        ".vhdl",
     }
     return path.suffix.lower() in COMMENT_STYLE_EXTENSIONS
 
@@ -65,7 +72,7 @@ class FileWatcher:
     """Watches source files for changes and AI comments"""
 
     # Compiled regex pattern for AI comments
-    ai_comment_pattern = re.compile(r"(?:#|//) *(ai\b.*|ai\b.*|.*\bai!?)$", re.IGNORECASE)
+    ai_comment_pattern = re.compile(r"(?:#|//|--) *(ai\b.*|ai\b.*|.*\bai!?)$", re.IGNORECASE)
 
     def __init__(self, coder, gitignores=None, verbose=False):
         self.coder = coder