diff --git a/src/core/diff/strategies/search-replace.ts b/src/core/diff/strategies/search-replace.ts
index 3990848..fd44736 100644
--- a/src/core/diff/strategies/search-replace.ts
+++ b/src/core/diff/strategies/search-replace.ts
@@ -126,7 +126,7 @@ Your search/replace content here
 </apply_diff>`
     }
 
-    applyDiff(originalContent: string, diffContent: string, startLine?: number, endLine?: number): DiffResult {
+    async applyDiff(originalContent: string, diffContent: string, startLine?: number, endLine?: number): Promise<DiffResult> {
         // Extract the search and replace blocks
         const match = diffContent.match(/<<<<<<< SEARCH\n([\s\S]*?)\n?=======\n([\s\S]*?)\n?>>>>>>> REPLACE/);
         if (!match) {
diff --git a/src/core/diff/strategies/unified.ts b/src/core/diff/strategies/unified.ts
index 2f80a61..cd5e31e 100644
--- a/src/core/diff/strategies/unified.ts
+++ b/src/core/diff/strategies/unified.ts
@@ -108,7 +108,7 @@ Your diff here
 </apply_diff>`
     }
 
-    applyDiff(originalContent: string, diffContent: string): DiffResult {
+    async applyDiff(originalContent: string, diffContent: string): Promise<DiffResult> {
         try {
             const result = applyPatch(originalContent, diffContent)
             if (result === false) {