diff --git a/package.json b/package.json
index f2570587c..cb3c4952a 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
         "lodash": "^4.17.15",
         "mint-ui": "^2.2.13",
         "node-sass": "^4.12.0",
-        "ol": "^7.2.2",
+        "ol": "^6.9.0",
         "portfinder": "^1.0.21",
         "proj4": "^2.8.0",
         "qs": "^6.7.0",
@@ -71,7 +71,7 @@
         "dai-js": "^0.0.12",
         "element-theme-chalk": "^2.13.0",
         "natives": "^1.1.6",
-        "ol": "^7.2.2",
+        "ol": "^6.9.0",
         "sass-loader": "^7.3.1",
         "script-loader": "^0.7.2",
         "tinymce": "5.8.2",