diff --git a/dev_scripts/dataset_generation/normalize_source.py b/dev_scripts/dataset_generation/normalize_source.py
index f9b684c..1269acc 100644
--- a/dev_scripts/dataset_generation/normalize_source.py
+++ b/dev_scripts/dataset_generation/normalize_source.py
@@ -35,8 +35,8 @@ def normalize_source(
     tree = ast.parse(source, feature_version=version)
     if replace_docstrings:
         for node in ast.walk(tree):
-            if isinstance(node, ast.Expr) and isinstance(node.value, ast.Str):
-                node.value.s = "pass"
+            if isinstance(node, ast.Expr) and isinstance(node.value, ast.Constant) and isinstance(node.value.value, str):
+                node.value.value = "pass"
     return ast.unparse(tree)
 
 
diff --git a/pylingual/editable_bytecode/bytecode_patches/__init__.py b/pylingual/editable_bytecode/bytecode_patches/__init__.py
index 53bb73f..f0d11ec 100644
--- a/pylingual/editable_bytecode/bytecode_patches/__init__.py
+++ b/pylingual/editable_bytecode/bytecode_patches/__init__.py
@@ -4,3 +4,4 @@ from .remove_docstrings import remove_docstrings
 from .remove_nop import remove_nop
 from .fix_indirect_jump import fix_indirect_jump
 from .replace_firstlno import replace_firstlno
+from .replace_borrow import replace_borrow
diff --git a/pylingual/editable_bytecode/bytecode_patches/replace_borrow.py b/pylingual/editable_bytecode/bytecode_patches/replace_borrow.py
new file mode 100644
index 0000000..68c406e
--- /dev/null
+++ b/pylingual/editable_bytecode/bytecode_patches/replace_borrow.py
@@ -0,0 +1,14 @@
+from ..EditableBytecode import EditableBytecode
+
+def replace_borrow(bytecode: EditableBytecode):
+    if bytecode.version < (3,14):
+        return
+    load_fast_borrows = [inst for inst  in bytecode.instructions if inst.opname == "LOAD_FAST_BORROW"]
+    for borrow in load_fast_borrows:
+        borrow.opname = "LOAD_FAST"
+        borrow.opcode = bytecode.opcode.LOAD_FAST
+
+    double_load_fast_borrows = [inst for inst  in bytecode.instructions if inst.opname == "LOAD_FAST_BORROW_LOAD_FAST_BORROW"]
+    for double_borrow in double_load_fast_borrows:
+        double_borrow.opname = "LOAD_FAST_LOAD_FAST"
+        double_borrow.opcode = bytecode.opcode.LOAD_FAST_LOAD_FAST
diff --git a/pylingual/equivalence_check.py b/pylingual/equivalence_check.py
index 1aa3b9b..4b02db0 100644
--- a/pylingual/equivalence_check.py
+++ b/pylingual/equivalence_check.py
@@ -7,7 +7,7 @@ from pathlib import Path
 import networkx as nx
 from pylingual.control_flow_reconstruction.cfg import CFG
 from pylingual.editable_bytecode import EditableBytecode, Inst, PYCFile
-from pylingual.editable_bytecode.bytecode_patches import fix_indirect_jump, fix_unreachable, remove_extended_arg, remove_nop, replace_firstlno
+from pylingual.editable_bytecode.bytecode_patches import fix_indirect_jump, fix_unreachable, remove_extended_arg, remove_nop, replace_firstlno, replace_borrow
 from pylingual.editable_bytecode.control_flow_graph import bytecode_to_control_flow_graph
 
 
@@ -191,8 +191,8 @@ def compare_pyc(pyc_a: PYCFile | Path, pyc_b: PYCFile | Path) -> list[TestResult
     pyc_a = pyc_a.copy() if isinstance(pyc_a, PYCFile) else PYCFile(pyc_a)
     pyc_b = pyc_b.copy() if isinstance(pyc_b, PYCFile) else PYCFile(pyc_b)
 
-    pyc_a.apply_patches([remove_extended_arg, remove_nop, fix_indirect_jump, fix_unreachable, remove_extended_arg, replace_firstlno])
-    pyc_b.apply_patches([remove_extended_arg, remove_nop, fix_indirect_jump, fix_unreachable, remove_extended_arg, replace_firstlno])
+    pyc_a.apply_patches([remove_extended_arg, remove_nop, fix_indirect_jump, fix_unreachable, remove_extended_arg, replace_firstlno, replace_borrow])
+    pyc_b.apply_patches([remove_extended_arg, remove_nop, fix_indirect_jump, fix_unreachable, remove_extended_arg, replace_firstlno, replace_borrow])
 
     results = []