diff --git a/package.json b/package.json
index e83fd9e..0e2d58d 100644
--- a/package.json
+++ b/package.json
@@ -31,6 +31,6 @@
   },
   "homepage": "https://github.com/stipsan/system-font-stack#readme",
   "devDependencies": {
-    "typescript": "^2.6.1"
+    "typescript": "^3.9.10"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index f502d06..f0e87bc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,7 @@
 # yarn lockfile v1
 
 
-typescript@^2.6.1:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.6.1.tgz#ef39cdea27abac0b500242d6726ab90e0c846631"
+typescript@^3.9.10:
+  version "3.9.10"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.10.tgz#70f3910ac7a51ed6bef79da7800690b19bf778b8"
+  integrity sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==