diff --git a/package-lock.json b/package-lock.json
index 77fc33eb3f..aecd1cbdce 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15596,9 +15596,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.0.3.tgz",
-      "integrity": "sha512-kk80vLW9iGtjMnIv11qyxLqZm20UklzuR2tL0QAnDIygIUIemcZMxlMWudl9OOt76H3ntVzcTiddQ1/pAAJMYg==",
+      "version": "3.9.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.5.tgz",
+      "integrity": "sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index 7a5f652eac..cf978bf2db 100644
--- a/package.json
+++ b/package.json
@@ -138,6 +138,6 @@
     "terser": "3.17.0",
     "ts-jest": "22.4.6",
     "tslib": "1.10.0",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   }
 }
diff --git a/packages/apollo-link-batch-http/package.json b/packages/apollo-link-batch-http/package.json
index e804806e0e..9745525611 100644
--- a/packages/apollo-link-batch-http/package.json
+++ b/packages/apollo-link-batch-http/package.json
@@ -55,7 +55,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-batch/package.json b/packages/apollo-link-batch/package.json
index 8e3c9a047d..12f3ac0054 100644
--- a/packages/apollo-link-batch/package.json
+++ b/packages/apollo-link-batch/package.json
@@ -49,7 +49,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-context/package.json b/packages/apollo-link-context/package.json
index 78cb7fa742..2f8dca0f48 100644
--- a/packages/apollo-link-context/package.json
+++ b/packages/apollo-link-context/package.json
@@ -41,7 +41,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-dedup/package.json b/packages/apollo-link-dedup/package.json
index e37a94713e..ee512c31a5 100644
--- a/packages/apollo-link-dedup/package.json
+++ b/packages/apollo-link-dedup/package.json
@@ -47,7 +47,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-error/package.json b/packages/apollo-link-error/package.json
index 0b198f1db0..f6d54229db 100644
--- a/packages/apollo-link-error/package.json
+++ b/packages/apollo-link-error/package.json
@@ -42,7 +42,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-http-common/package.json b/packages/apollo-link-http-common/package.json
index 91a421c7cc..75bf66af94 100644
--- a/packages/apollo-link-http-common/package.json
+++ b/packages/apollo-link-http-common/package.json
@@ -44,7 +44,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "repository": {
     "type": "git",
diff --git a/packages/apollo-link-http/package.json b/packages/apollo-link-http/package.json
index ab0bb7aa8d..c9926df523 100644
--- a/packages/apollo-link-http/package.json
+++ b/packages/apollo-link-http/package.json
@@ -55,7 +55,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-polling/package.json b/packages/apollo-link-polling/package.json
index 36836b6122..0812d3befe 100644
--- a/packages/apollo-link-polling/package.json
+++ b/packages/apollo-link-polling/package.json
@@ -49,7 +49,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-retry/package.json b/packages/apollo-link-retry/package.json
index 0010c48fab..342b073d14 100644
--- a/packages/apollo-link-retry/package.json
+++ b/packages/apollo-link-retry/package.json
@@ -48,7 +48,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3",
+    "typescript": "3.9.5",
     "wait-for-observables": "1.0.3"
   },
   "jest": {
diff --git a/packages/apollo-link-schema/package.json b/packages/apollo-link-schema/package.json
index 2c3fc10120..69b67e19ba 100644
--- a/packages/apollo-link-schema/package.json
+++ b/packages/apollo-link-schema/package.json
@@ -53,7 +53,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link-ws/package.json b/packages/apollo-link-ws/package.json
index a7ef55be33..678d5038df 100644
--- a/packages/apollo-link-ws/package.json
+++ b/packages/apollo-link-ws/package.json
@@ -51,7 +51,7 @@
     "subscriptions-transport-ws": "0.9.16",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/apollo-link/package.json b/packages/apollo-link/package.json
index 75717c7ab5..56727eaa83 100644
--- a/packages/apollo-link/package.json
+++ b/packages/apollo-link/package.json
@@ -53,7 +53,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {
diff --git a/packages/zen-observable-ts/package.json b/packages/zen-observable-ts/package.json
index b516fac7c0..59b6a42e3d 100644
--- a/packages/zen-observable-ts/package.json
+++ b/packages/zen-observable-ts/package.json
@@ -35,7 +35,7 @@
     "rollup": "1.29.1",
     "ts-jest": "22.4.6",
     "tslint": "5.20.1",
-    "typescript": "3.0.3"
+    "typescript": "3.9.5"
   },
   "jest": {
     "transform": {