diff --git a/client/package.json b/client/package.json
index 60fb86a..9c39025 100644
--- a/client/package.json
+++ b/client/package.json
@@ -6,8 +6,8 @@
     "@chakra-ui/react": "^1.6.4",
     "@emotion/react": "^11.4.0",
     "@emotion/styled": "^11.3.0",
-    "@pdftron/webviewer": "^8.2.0-20211006",
-    "@pdftron/webviewer-html": "^3.1.0",
+    "@pdftron/webviewer": "^7.3.2",
+    "@pdftron/webviewer-html": "~4.0.1",
     "@testing-library/jest-dom": "^5.11.5",
     "@testing-library/react": "^11.1.0",
     "@testing-library/user-event": "^12.1.10",