diff --git a/functions/package-lock.json b/functions/package-lock.json
index 63d60de..bfdbf85 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -2129,9 +2129,9 @@
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     },
     "typescript": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
-      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
+      "version": "3.9.10",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
+      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
       "dev": true
     },
     "unique-string": {
diff --git a/functions/package.json b/functions/package.json
index cd6229b..0614845 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "tslint": "5.12.0",
-    "typescript": "3.5.3"
+    "typescript": "3.9.10"
   },
   "private": true
 }
diff --git a/package-lock.json b/package-lock.json
index 203f9af..2e0fd40 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -163,6 +163,14 @@
         "tslib": "1.10.0",
         "typescript": "3.5.3",
         "webpack-sources": "1.4.3"
+      },
+      "dependencies": {
+        "typescript": {
+          "version": "3.5.3",
+          "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+          "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
+          "dev": true
+        }
       }
     },
     "@angular-devkit/build-webpack": {
@@ -12483,9 +12491,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
-      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
+      "version": "3.9.10",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.10.tgz",
+      "integrity": "sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index 0519cb6..0b88da5 100644
--- a/package.json
+++ b/package.json
@@ -109,7 +109,7 @@
     "ts-node": "8.4.1",
     "tsickle": "0.37.0",
     "tslint": "5.20.0",
-    "typescript": "3.5.3",
+    "typescript": "3.9.10",
     "webpack-cli": "3.3.9",
     "xmlbuilder": "13.0.2"
   }