diff --git a/earthsnake/path.py b/earthsnake/path.py
index d39c5ab..b616fde 100644
--- a/earthsnake/path.py
+++ b/earthsnake/path.py
@@ -11,7 +11,7 @@ PATH_CHARACTER = ALPHA_LOWER + ALPHA_UPPER + DIGIT + PATH_PUNCTUATION
 class Path:
     """A document path"""
 
-    _SEGMENT_PATTERN = f'/[{PATH_CHARACTER}]+'
+    _SEGMENT_PATTERN = f'/[{PATH_CHARACTER}]+'.replace('$', '\\$')
     _PATTERN = f'^({_SEGMENT_PATTERN})+$'
 
     def __init__(self, path: str) -> None: