1 files changed, 2 insertions, 0 deletions
diff --git a/packages/core/src/tools/edit.ts b/packages/core/src/tools/edit.ts
index 3317d460..ddb521be 100644
--- a/packages/core/src/tools/edit.ts
+++ b/packages/core/src/tools/edit.ts
@@ -467,10 +467,12 @@ Expectation for required parameters:
         }
       },
       createUpdatedParams: (
+        oldContent: string,
         modifiedProposedContent: string,
         originalParams: EditToolParams,
       ): EditToolParams => ({
         ...originalParams,
+        old_string: oldContent,
         new_string: modifiedProposedContent,
       }),
     };