diff --git a/package.json b/package.json
index d7d3ca3..e7c62b6 100644
--- a/package.json
+++ b/package.json
@@ -24,9 +24,10 @@
     "deploy": "gh-pages -d example/build"
   },
   "peerDependencies": {
-    "react": "^16.0.0",
     "@emotion/react": "^11.1.1",
-    "@emotion/styled": "^11.0.0"
+    "@emotion/styled": "^11.0.0",
+    "react": "^16.0.0",
+    "react-calendar": "^3.2.1"
   },
   "devDependencies": {
     "babel-eslint": "^10.0.3",