diff --git a/dist/types.d.ts b/dist/types.d.ts
index 8ee8dbf3224b69e2b6be391c77a7d96aed892ac8..dcb3e8d496d52ff8979f90a5bdde076f40e8d07f 100644
--- a/dist/types.d.ts
+++ b/dist/types.d.ts
@@ -185,8 +185,8 @@ export interface SealHeadData {
 }
 export interface SealCoords {
     [key: string]: {
-        x: number;
-        y: number;
+        x: string;
+        y: string;
     };
 }
 export interface SealIndexObject {
diff --git a/src/types.ts b/src/types.ts
index d6c39809661b5631857cc40bc08c7e6706963759..b5a7e600c48f414d0b49a1ec78bd5f94ff6e3c3f 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -207,7 +207,7 @@ export interface SealHeadData {
 }
 
 export interface SealCoords {
-  [key: string]: { x: number; y: number };
+  [key: string]: { x: string; y: string };
 }
 export interface SealIndexObject {
   sealKey: string;