diff --git a/website/package.json b/website/package.json
index 1a3848d6..d16b80fe 100644
--- a/website/package.json
+++ b/website/package.json
@@ -133,7 +133,7 @@
     "react": "16",
     "react-dom": "^16.0.1",
     "react-redux": "^7.2.0",
-    "recast": "^0.20.3",
+    "recast": "^0.21.1",
     "redot": "^0.6.0",
     "redux": "^4.0.5",
     "regexp-tree": "^0.1.5",
diff --git a/website/yarn.lock b/website/yarn.lock
index 33bc9634..b06398cd 100644
--- a/website/yarn.lock
+++ b/website/yarn.lock
@@ -2294,6 +2294,13 @@ ast-types@0.14.1:
   dependencies:
     tslib "^2.0.1"
 
+ast-types@0.15.2:
+  version "0.15.2"
+  resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.15.2.tgz#39ae4809393c4b16df751ee563411423e85fb49d"
+  integrity sha512-c27loCv9QkZinsa5ProX751khO9DJl/AcB5c2KNtA6NRvHKS0PgLfcftz72KVq504vB0Gku5s2kUZzDBvQWvHg==
+  dependencies:
+    tslib "^2.0.1"
+
 ast-types@0.8.12:
   version "0.8.12"
   resolved "https://registry.yarnpkg.com/ast-types/-/ast-types-0.8.12.tgz#a0d90e4351bb887716c83fd637ebf818af4adfcc"
@@ -9847,6 +9854,16 @@ recast@^0.20.3:
     source-map "~0.6.1"
     tslib "^2.0.1"
 
+recast@^0.21.1:
+  version "0.21.1"
+  resolved "https://registry.yarnpkg.com/recast/-/recast-0.21.1.tgz#9b3f4f68c1fe9c1513a1c02ff572fdef02231de2"
+  integrity sha512-PF61BHLaOGF5oIKTpSrDM6Qfy2d7DIx5qblgqG+wjqHuFH97OgAqBYFIJwEuHTrM6pQGT17IJ8D0C/jVu/0tig==
+  dependencies:
+    ast-types "0.15.2"
+    esprima "~4.0.0"
+    source-map "~0.6.1"
+    tslib "^2.0.1"
+
 rechoir@^0.6.2:
   version "0.6.2"
   resolved "https://registry.yarnpkg.com/rechoir/-/rechoir-0.6.2.tgz#85204b54dba82d5742e28c96756ef43af50e3384"