diff --git a/packages/language-service/ivy/language_service.ts b/packages/language-service/ivy/language_service.ts
index 23d1c7e07e..ec6c18a09a 100644
--- a/packages/language-service/ivy/language_service.ts
+++ b/packages/language-service/ivy/language_service.ts
@@ -487,6 +487,9 @@ function createProgramDriver(project: ts.server.Project): ProgramDriver {
         scriptInfo.editContent(0, length, newText);
       }
     },
+    getSourceFileVersion(sf: ts.SourceFile): string {
+      return project.getScriptVersion(sf.fileName);
+    }
   };
 }