diff --git a/package.json b/package.json
index 4415c9b..3acaa38 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "protractor": "~5.4.0",
     "ts-node": "~8.0.0",
     "tslint": "~5.12.0",
-    "typescript": "~3.1.6"
+    "typescript": "~3.9.0"
   },
   "description": "An Ionic 4 project which shows back (and forth) navigation between tabs and 'global' pages."
 }
diff --git a/yarn.lock b/yarn.lock
index 2b558c8..08bcbfb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6033,9 +6033,10 @@ typescript@^3.2.4:
   version "3.3.3333"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.3.3333.tgz#171b2c5af66c59e9431199117a3bcadc66fdcfd6"
 
-typescript@~3.1.6:
-  version "3.1.6"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.6.tgz#b6543a83cfc8c2befb3f4c8fba6896f5b0c9be68"
+typescript@~3.9.0:
+  version "3.9.10"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.10.tgz#70f3910ac7a51ed6bef79da7800690b19bf778b8"
+  integrity sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==
 
 uglify-js@^3.1.4:
   version "3.4.9"