diff --git a/endpoints/getting-started/package.json b/endpoints/getting-started/package.json
index 196b4e176d..6ed8e8fbd5 100644
--- a/endpoints/getting-started/package.json
+++ b/endpoints/getting-started/package.json
@@ -25,7 +25,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0",
+    "sinon": "7.2.2",
     "supertest": "3.3.0"
   }
 }
diff --git a/functions/background/package.json b/functions/background/package.json
index e6e66ed0f0..7b65efa710 100644
--- a/functions/background/package.json
+++ b/functions/background/package.json
@@ -22,7 +22,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/billing/package.json b/functions/billing/package.json
index a7b901da07..f3a05227eb 100644
--- a/functions/billing/package.json
+++ b/functions/billing/package.json
@@ -20,6 +20,6 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "^0.25.0",
     "proxyquire": "^2.1.0",
-    "sinon": "^6.3.4"
+    "sinon": "^7.0.0"
   }
 }
diff --git a/functions/composer-storage-trigger/package.json b/functions/composer-storage-trigger/package.json
index e8b230ee48..bcdc4704d5 100644
--- a/functions/composer-storage-trigger/package.json
+++ b/functions/composer-storage-trigger/package.json
@@ -19,7 +19,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "scripts": {
     "test": "ava -T 20s --verbose test/*.test.js"
diff --git a/functions/concepts/package.json b/functions/concepts/package.json
index 63d464dfcb..2bd3d50945 100644
--- a/functions/concepts/package.json
+++ b/functions/concepts/package.json
@@ -17,7 +17,7 @@
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "^0.25.0",
-    "sinon": "^4.5.0",
+    "sinon": "^7.0.0",
     "supertest": "^3.0.0"
   }
 }
diff --git a/functions/datastore/package.json b/functions/datastore/package.json
index d052350132..6236b96974 100644
--- a/functions/datastore/package.json
+++ b/functions/datastore/package.json
@@ -25,7 +25,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0",
+    "sinon": "7.2.2",
     "uuid": "^3.3.2"
   },
   "cloud-repo-tools": {
diff --git a/functions/env_vars/package.json b/functions/env_vars/package.json
index 44f8cb13a3..5560e49b1d 100644
--- a/functions/env_vars/package.json
+++ b/functions/env_vars/package.json
@@ -18,7 +18,7 @@
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/firebase/package.json b/functions/firebase/package.json
index 25bd3818b6..7bc503352c 100644
--- a/functions/firebase/package.json
+++ b/functions/firebase/package.json
@@ -18,7 +18,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0",
+    "sinon": "7.2.2",
     "supertest": "^3.0.0",
     "uuid": "^3.1.0"
   },
diff --git a/functions/helloworld/package.json b/functions/helloworld/package.json
index deb375e48a..4d82d52f16 100644
--- a/functions/helloworld/package.json
+++ b/functions/helloworld/package.json
@@ -29,7 +29,7 @@
     "ava": "^0.25.0",
     "express": "^4.16.3",
     "proxyquire": "^2.1.0",
-    "sinon": "^4.5.0",
+    "sinon": "^7.0.0",
     "supertest": "^3.0.0",
     "uuid": "^3.1.0",
     "yargs": "^12.0.0"
diff --git a/functions/http/package.json b/functions/http/package.json
index 6229de2cfb..f015ed013c 100644
--- a/functions/http/package.json
+++ b/functions/http/package.json
@@ -18,7 +18,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "^0.25.0",
     "proxyquire": "^2.1.0",
-    "sinon": "^4.5.0",
+    "sinon": "^7.0.0",
     "uuid": "^3.3.2"
   },
   "dependencies": {
diff --git a/functions/imagemagick/package.json b/functions/imagemagick/package.json
index e0fbf02882..87056984bc 100644
--- a/functions/imagemagick/package.json
+++ b/functions/imagemagick/package.json
@@ -23,7 +23,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "^0.25.0",
     "proxyquire": "^2.1.0",
-    "sinon": "^4.5.0"
+    "sinon": "^7.0.0"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/log/package.json b/functions/log/package.json
index d587f213ea..17518b4db8 100644
--- a/functions/log/package.json
+++ b/functions/log/package.json
@@ -22,7 +22,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/ocr/app/package.json b/functions/ocr/app/package.json
index f65a078a4e..9e561691ec 100644
--- a/functions/ocr/app/package.json
+++ b/functions/ocr/app/package.json
@@ -25,7 +25,7 @@
     "@google-cloud/nodejs-repo-tools": "3.1.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "3.3.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/pubsub/package.json b/functions/pubsub/package.json
index ea8229f5dc..1563e373c4 100644
--- a/functions/pubsub/package.json
+++ b/functions/pubsub/package.json
@@ -22,7 +22,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/scheduleinstance/package.json b/functions/scheduleinstance/package.json
index af9628be81..563c0f14de 100644
--- a/functions/scheduleinstance/package.json
+++ b/functions/scheduleinstance/package.json
@@ -18,7 +18,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "^0.25.0",
     "proxyquire": "^2.0.0",
-    "sinon": "^4.4.2"
+    "sinon": "^7.0.0"
   },
   "dependencies": {
     "@google-cloud/compute": "^0.10.0",
diff --git a/functions/sendgrid/package.json b/functions/sendgrid/package.json
index 45429cdb57..57f2e8ef3c 100644
--- a/functions/sendgrid/package.json
+++ b/functions/sendgrid/package.json
@@ -25,7 +25,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "^0.25.0",
     "proxyquire": "^2.1.0",
-    "sinon": "^4.0.2"
+    "sinon": "^7.0.0"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/slack/package.json b/functions/slack/package.json
index 90a8802075..abd4d33887 100644
--- a/functions/slack/package.json
+++ b/functions/slack/package.json
@@ -21,7 +21,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/spanner/package.json b/functions/spanner/package.json
index ed458a94e3..33c327e51f 100644
--- a/functions/spanner/package.json
+++ b/functions/spanner/package.json
@@ -21,7 +21,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/sql/package.json b/functions/sql/package.json
index 6b766c2f7e..e7c8311123 100644
--- a/functions/sql/package.json
+++ b/functions/sql/package.json
@@ -27,7 +27,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "^2.1.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/tips/package.json b/functions/tips/package.json
index a1a0c17f8b..5d8dbfe387 100644
--- a/functions/tips/package.json
+++ b/functions/tips/package.json
@@ -18,7 +18,7 @@
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
-    "sinon": "^4.5.0"
+    "sinon": "^7.0.0"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/functions/uuid/package.json b/functions/uuid/package.json
index 96e35243e3..f3d5689993 100644
--- a/functions/uuid/package.json
+++ b/functions/uuid/package.json
@@ -20,7 +20,7 @@
   "devDependencies": {
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
-    "sinon": "4.5.0"
+    "sinon": "7.2.2"
   },
   "cloud-repo-tools": {
     "requiresKeyFile": true,
diff --git a/language/slackbot/package.json b/language/slackbot/package.json
index 8f4c691cc6..341b18e507 100644
--- a/language/slackbot/package.json
+++ b/language/slackbot/package.json
@@ -29,6 +29,6 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "3.3.0"
+    "sinon": "7.2.2"
   }
 }
diff --git a/storage-transfer/package.json b/storage-transfer/package.json
index 0ab9352223..2b59e66c13 100644
--- a/storage-transfer/package.json
+++ b/storage-transfer/package.json
@@ -25,7 +25,7 @@
     "@google-cloud/nodejs-repo-tools": "^3.0.0",
     "ava": "0.25.0",
     "proxyquire": "2.1.0",
-    "sinon": "4.5.0",
+    "sinon": "7.2.2",
     "@google-cloud/storage": "^2.3.3",
     "uuid": "3.3.2"
   },