diff --git a/site/package.json b/site/package.json
index a6ffa010..56f3c671 100644
--- a/site/package.json
+++ b/site/package.json
@@ -19,6 +19,7 @@
     "next-mdx-remote": "^3.0.4",
     "papaparse": "^5.3.1",
     "postcss": "^8.2.10",
+    "prop-types": "^15.7.2",
     "react": "17.0.2",
     "react-dom": "17.0.2",
     "react-vega": "^7.4.4",
diff --git a/site/yarn.lock b/site/yarn.lock
index 0997add5..b098ad9a 100644
--- a/site/yarn.lock
+++ b/site/yarn.lock
@@ -2468,7 +2468,7 @@ longest-streak@^2.0.0:
   resolved "https://registry.yarnpkg.com/longest-streak/-/longest-streak-2.0.4.tgz#b8599957da5b5dab64dee3fe316fa774597d90e4"
   integrity sha512-vM6rUVCVUJJt33bnmHiZEvr7wPT78ztX7rojL+LW51bHtLh6HTjx84LA5W4+oa6aKEJA7jJu5LR6vQRBpA5DVg==
 
-loose-envify@^1.1.0:
+loose-envify@^1.1.0, loose-envify@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
   integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
@@ -3234,6 +3234,15 @@ promise-polyfill@^1.1.6:
   resolved "https://registry.yarnpkg.com/promise-polyfill/-/promise-polyfill-1.1.6.tgz#cd04eff46f5c95c3a7d045591d79b5e3e01f12d7"
   integrity sha1-zQTv9G9clcOn0EVZHXm14+AfEtc=
 
+prop-types@^15.7.2:
+  version "15.7.2"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
+  integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.8.1"
+
 property-information@^5.0.0, property-information@^5.3.0:
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/property-information/-/property-information-5.6.0.tgz#61675545fb23002f245c6540ec46077d4da3ed69"
@@ -3349,6 +3358,11 @@ react-is@17.0.2:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.2.tgz#e691d4a8e9c789365655539ab372762b0efb54f0"
   integrity sha512-w2GsyukL62IJnlaff/nRegPQR94C/XXamvMWmSHRJ4y7Ts/4ocGRmTHvOs8PSE6pB3dWOrD/nueuU5sduBsQ4w==
 
+react-is@^16.8.1:
+  version "16.13.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
+  integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
+
 react-refresh@0.8.3:
   version "0.8.3"
   resolved "https://registry.yarnpkg.com/react-refresh/-/react-refresh-0.8.3.tgz#721d4657672d400c5e3c75d063c4a85fb2d5d68f"