diff --git a/gatsby-theme-events-typescript/package.json b/gatsby-theme-events-typescript/package.json
index 5ac1917..095cf98 100644
--- a/gatsby-theme-events-typescript/package.json
+++ b/gatsby-theme-events-typescript/package.json
@@ -35,7 +35,7 @@
         "prettier": "^1.18.2",
         "react": "^16.11.0",
         "react-dom": "^16.11.0",
-        "typescript": "^3.7.3"
+        "typescript": "^4.3.4"
     },
     "dependencies": {
         "@emotion/core": "^10.0.16",
diff --git a/yarn.lock b/yarn.lock
index 9180472..7c8bc7b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12511,10 +12511,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.7.3:
-  version "3.7.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.3.tgz#b36840668a16458a7025b9eabfad11b66ab85c69"
-  integrity sha512-Mcr/Qk7hXqFBXMN7p7Lusj1ktCBydylfQM/FZCk5glCNQJrCUKPkMHdo9R0MTFWsC/4kPFvDS0fDPvukfCkFsw==
+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==
 
 unc-path-regex@^0.1.2:
   version "0.1.2"