diff --git a/codechunk/core/chunking.py b/codechunk/core/chunking.py
index c57e4f1..c4913f2 100644
--- a/codechunk/core/chunking.py
+++ b/codechunk/core/chunking.py
@@ -1,5 +1,5 @@
 from dataclasses import dataclass, field
-from typing import List, Optional, Dict, Any
+from typing import Optional, Any
 from pathlib import Path
 import re
 
@@ -13,9 +13,9 @@ class ChunkMetadata:
     end_line: int
     line_count: int
     docstring: Optional[str] = None
-    imports: List[str] = field(default_factory=list)
-    decorators: List[str] = field(default_factory=list)
-    parameters: List[str] = field(default_factory=list)
+    imports: list[str] = field(default_factory=list)
+    decorators: list[str] = field(default_factory=list)
+    parameters: list[str] = field(default_factory=list)
     return_type: Optional[str] = None
     complexity_score: int = 1
     original_content: str = ""
@@ -28,7 +28,7 @@ class ParsedChunk:
     content: str
     metadata: ChunkMetadata
     priority: int = 0
-    dependencies: List[str] = field(default_factory=list)
+    dependencies: list[str] = field(default_factory=list)
     summary: str = ""
     is_boilerplate: bool = False
 
@@ -52,7 +52,7 @@ class CodeChunker:
             (r'def\s+__ge__\s*\([^)]*\)\s*:', '__ge__'),
         ]
 
-    def chunk_all(self, chunks: List[ParsedChunk]) -> List[ParsedChunk]:
+    def chunk_all(self, chunks: list[ParsedChunk]) -> list[ParsedChunk]:
         """Process all chunks: remove boilerplate, add priorities."""
         result = []
         for chunk in chunks:
@@ -67,7 +67,7 @@ class CodeChunker:
             return chunk
 
         content = chunk.content
-        for pattern, pattern_type in self.boilerplate_patterns:
+        for pattern, _pattern_type in self.boilerplate_patterns:
             if re.search(pattern, content, re.MULTILINE):
                 chunk.is_boilerplate = True
                 break
@@ -116,17 +116,17 @@ class CodeChunker:
         chunk.priority = priority
         return chunk
 
-    def _sort_by_priority(self, chunks: List[ParsedChunk]) -> List[ParsedChunk]:
+    def _sort_by_priority(self, chunks: list[ParsedChunk]) -> list[ParsedChunk]:
         """Sort chunks by priority (highest first)."""
         return sorted(chunks, key=lambda c: c.priority, reverse=True)
 
-    def split_large_chunk(self, chunk: ParsedChunk) -> List[ParsedChunk]:
+    def split_large_chunk(self, chunk: ParsedChunk) -> list[ParsedChunk]:
         """Split a large chunk into smaller pieces."""
         if chunk.metadata.line_count <= self.config.max_chunk_size:
             return [chunk]
 
         lines = chunk.content.split('\n')
-        parts = []
+        parts: list[ParsedChunk] = []
         current_part = []
         current_lines = 0