diff --git a/client/grpc-web-fake-transport/package-lock.json b/client/grpc-web-fake-transport/package-lock.json
index 49a485b5..da9d5626 100644
--- a/client/grpc-web-fake-transport/package-lock.json
+++ b/client/grpc-web-fake-transport/package-lock.json
@@ -16,7 +16,7 @@
 				"@types/google-protobuf": "^3.7.4",
 				"@types/jest": "^26.0.20",
 				"@types/lodash.assignin": "^4.2.6",
-				"@types/node": "^14.14.22",
+				"@types/node": "^16.4.7",
 				"google-protobuf": "^3.7.1",
 				"jest": "^26.6.3",
 				"ts-jest": "^26.5.0",
@@ -675,7 +675,6 @@
 				"jest-resolve": "^26.6.2",
 				"jest-util": "^26.6.2",
 				"jest-worker": "^26.6.2",
-				"node-notifier": "^8.0.0",
 				"slash": "^3.0.0",
 				"source-map": "^0.6.0",
 				"string-length": "^4.0.1",
@@ -900,9 +899,9 @@
 			}
 		},
 		"node_modules/@types/node": {
-			"version": "14.14.22",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-			"integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
+			"version": "16.4.7",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+			"integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
 			"dev": true
 		},
 		"node_modules/@types/normalize-package-data": {
@@ -1888,8 +1887,7 @@
 				"esprima": "^4.0.1",
 				"estraverse": "^4.2.0",
 				"esutils": "^2.0.2",
-				"optionator": "^0.8.1",
-				"source-map": "~0.6.1"
+				"optionator": "^0.8.1"
 			},
 			"bin": {
 				"escodegen": "bin/escodegen.js",
@@ -3130,7 +3128,6 @@
 				"@types/node": "*",
 				"anymatch": "^3.0.3",
 				"fb-watchman": "^2.0.0",
-				"fsevents": "^2.1.2",
 				"graceful-fs": "^4.2.4",
 				"jest-regex-util": "^26.0.0",
 				"jest-serializer": "^26.6.2",
@@ -7006,9 +7003,9 @@
 			}
 		},
 		"@types/node": {
-			"version": "14.14.22",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-			"integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
+			"version": "16.4.7",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+			"integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
 			"dev": true
 		},
 		"@types/normalize-package-data": {
diff --git a/client/grpc-web-fake-transport/package.json b/client/grpc-web-fake-transport/package.json
index 06e4d1a4..fd203cb1 100644
--- a/client/grpc-web-fake-transport/package.json
+++ b/client/grpc-web-fake-transport/package.json
@@ -23,7 +23,7 @@
     "@types/google-protobuf": "^3.7.4",
     "@types/jest": "^26.0.20",
     "@types/lodash.assignin": "^4.2.6",
-    "@types/node": "^14.14.22",
+    "@types/node": "^16.4.7",
     "google-protobuf": "^3.7.1",
     "jest": "^26.6.3",
     "ts-jest": "^26.5.0",
diff --git a/client/grpc-web-node-http-transport/package-lock.json b/client/grpc-web-node-http-transport/package-lock.json
index 950e6946..f343ad09 100644
--- a/client/grpc-web-node-http-transport/package-lock.json
+++ b/client/grpc-web-node-http-transport/package-lock.json
@@ -10,7 +10,7 @@
 			"license": "Apache-2.0",
 			"devDependencies": {
 				"@improbable-eng/grpc-web": "^0.13.0",
-				"@types/node": "^14.14.22",
+				"@types/node": "^16.4.7",
 				"google-protobuf": "^3.14.0",
 				"typescript": "^4.1.3"
 			},
@@ -31,9 +31,9 @@
 			}
 		},
 		"node_modules/@types/node": {
-			"version": "14.14.22",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-			"integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
+			"version": "16.4.7",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+			"integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
 			"dev": true
 		},
 		"node_modules/browser-headers": {
@@ -73,9 +73,9 @@
 			}
 		},
 		"@types/node": {
-			"version": "14.14.22",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-			"integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
+			"version": "16.4.7",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+			"integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
 			"dev": true
 		},
 		"browser-headers": {
diff --git a/client/grpc-web-node-http-transport/package.json b/client/grpc-web-node-http-transport/package.json
index 96afffa2..9f238337 100644
--- a/client/grpc-web-node-http-transport/package.json
+++ b/client/grpc-web-node-http-transport/package.json
@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "@improbable-eng/grpc-web": "^0.13.0",
-    "@types/node": "^14.14.22",
+    "@types/node": "^16.4.7",
     "google-protobuf": "^3.14.0",
     "typescript": "^4.1.3"
   }
diff --git a/client/grpc-web/package-lock.json b/client/grpc-web/package-lock.json
index 15b8eb11..c608d832 100644
--- a/client/grpc-web/package-lock.json
+++ b/client/grpc-web/package-lock.json
@@ -13,7 +13,7 @@
 			},
 			"devDependencies": {
 				"@types/google-protobuf": "^3.7.4",
-				"@types/node": "^14.14.22",
+				"@types/node": "^16.4.7",
 				"google-protobuf": "^3.14.0",
 				"ts-loader": "^8.0.14",
 				"typescript": "4.1.3",
@@ -72,9 +72,9 @@
 			"dev": true
 		},
 		"node_modules/@types/node": {
-			"version": "14.14.22",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-			"integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
+			"version": "16.4.7",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+			"integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
 			"dev": true
 		},
 		"node_modules/@webassemblyjs/ast": {
@@ -1819,9 +1819,9 @@
 			"dev": true
 		},
 		"@types/node": {
-			"version": "14.14.22",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-			"integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
+			"version": "16.4.7",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+			"integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
 			"dev": true
 		},
 		"@webassemblyjs/ast": {
diff --git a/client/grpc-web/package.json b/client/grpc-web/package.json
index 6fe12869..91eb4d38 100644
--- a/client/grpc-web/package.json
+++ b/client/grpc-web/package.json
@@ -37,7 +37,7 @@
   },
   "devDependencies": {
     "@types/google-protobuf": "^3.7.4",
-    "@types/node": "^14.14.22",
+    "@types/node": "^16.4.7",
     "google-protobuf": "^3.14.0",
     "ts-loader": "^8.0.14",
     "typescript": "4.1.3",
diff --git a/integration_test/package-lock.json b/integration_test/package-lock.json
index 73ad63ca..2f1fe5b5 100644
--- a/integration_test/package-lock.json
+++ b/integration_test/package-lock.json
@@ -220,6 +220,19 @@
 			"integrity": "sha512-HyYEUDeIj5rRQU2Hk5HTB2uHsbRQpF70nvMhVzi+VJR0X+xNEhjPui4/kBf3VeH/wqD28PT4sVOm8qqLjBrSZg==",
 			"dev": true
 		},
+		"@improbable-eng/grpc-web": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@improbable-eng/grpc-web/-/grpc-web-0.14.0.tgz",
+			"integrity": "sha512-ag1PTMWpBZKGi6GrEcZ4lkU5Qag23Xjo10BmnK9qyx4TMmSVcWmQ3rECirfQzm2uogrM9n1M6xfOpFsJP62ivA==",
+			"requires": {
+				"browser-headers": "^0.4.1"
+			}
+		},
+		"@improbable-eng/grpc-web-node-http-transport": {
+			"version": "0.14.0",
+			"resolved": "https://registry.npmjs.org/@improbable-eng/grpc-web-node-http-transport/-/grpc-web-node-http-transport-0.14.0.tgz",
+			"integrity": "sha512-NGZJgY8zTTWM//9oGdJZ+acmCgcgUcqxu3NV3GMFxw35D+3xkdEz599r9O7urg1Vv0+LzXDvfWEg7qg1Ec8x1w=="
+		},
 		"@types/chai": {
 			"version": "4.2.14",
 			"resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.14.tgz",
@@ -295,9 +308,9 @@
 			"dev": true
 		},
 		"@types/node": {
-			"version": "14.14.22",
-			"resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.22.tgz",
-			"integrity": "sha512-g+f/qj/cNcqKkc3tFqlXOYjrmZA+jNBiDzbP3kH+B+otKFqAdPgVTGP1IeKRdMml/aE69as5S4FqtxAbl+LaMw==",
+			"version": "16.4.7",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+			"integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
 			"dev": true
 		},
 		"@webassemblyjs/ast": {
diff --git a/integration_test/package.json b/integration_test/package.json
index 1fbaab01..06f8edfa 100644
--- a/integration_test/package.json
+++ b/integration_test/package.json
@@ -31,7 +31,7 @@
     "@types/google-protobuf": "^3.7.4",
     "@types/jasmine": "^3.6.3",
     "@types/lodash": "^4.14.168",
-    "@types/node": "^14.14.22",
+    "@types/node": "^16.4.7",
     "assert": "^2.0.0",
     "babel-loader": "^8.2.2",
     "babel-preset-env": "^1.7.0",