diff --git a/testsr.py b/testsr.py
index 9e448b73d..8b1a7d5be 100755
--- a/testsr.py
+++ b/testsr.py
@@ -4,10 +4,24 @@ import json
 import re
 import sys
 
-from aider.coders.base_coder import all_fences
+# from aider.coders.base_coder import all_fences
 from aider.coders.editblock_coder import find_original_update_blocks
 
 
+def wrap_fence(name):
+    return f"<{name}>", f"</{name}>"
+
+
+all_fences = [
+    ("``" + "`", "``" + "`"),
+    wrap_fence("source"),
+    wrap_fence("code"),
+    wrap_fence("pre"),
+    wrap_fence("codeblock"),
+    wrap_fence("sourcecode"),
+]
+
+
 def process_markdown(filename):
     try:
         with open(filename, "r") as file: