diff --git a/package.json b/package.json
index d44f837a..e8703847 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,6 @@
     "@zeit/ncc": "^0.22.3",
     "ts-node": "^9.1.1",
     "ttypescript": "^1.5.12",
-    "typescript": "^4.2.3"
+    "typescript": "^4.3.4"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 3cc50cfd..5ad389c8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -490,10 +490,10 @@ typescript-is@^0.17.1:
   optionalDependencies:
     reflect-metadata ">=0.1.12"
 
-typescript@^4.2.3:
-  version "4.2.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.3.tgz#39062d8019912d43726298f09493d598048c1ce3"
-  integrity sha512-qOcYwxaByStAWrBf4x0fibwZvMRG+r4cQoTjbPtUlrWjBHbmCAww1i448U0GJ+3cNNEtebDteo/cHOR3xJ4wEw==
+typescript@^4.3.4:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.4.tgz#3f85b986945bcf31071decdd96cf8bfa65f9dcbc"
+  integrity sha512-uauPG7XZn9F/mo+7MrsRjyvbxFpzemRjKEZXS4AK83oP2KKOJPvb+9cO/gmnv8arWZvhnjVOXz7B49m1l0e9Ew==
 
 universalify@^0.1.2:
   version "0.1.2"