diff --git a/package-lock.json b/package-lock.json
index 65405b80..e5038f80 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5105,9 +5105,9 @@
       }
     },
     "node_modules/@types/sinon": {
-      "version": "17.0.4",
-      "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-17.0.4.tgz",
-      "integrity": "sha512-RHnIrhfPO3+tJT0s7cFaXGZvsL4bbR3/k7z3P312qMS4JaS2Tk+KiwiLx1S0rQ56ERj00u1/BtdyVd0FY+Pdew==",
+      "version": "21.0.1",
+      "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-21.0.1.tgz",
+      "integrity": "sha512-5yoJSqLbjH8T9V2bksgRayuhpZy+723/z6wBOR+Soe4ZlXC0eW8Na71TeaZPUWDQvM7LYKa9UGFc6LRqxiR5fQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -17283,7 +17283,7 @@
         "@types/mocha": "10.0.8",
         "@types/nock": "11.1.0",
         "@types/node": "18.19.130",
-        "@types/sinon": "17.0.4",
+        "@types/sinon": "21.0.1",
         "gts": "6.0.2",
         "mocha": "11.7.2",
         "nock": "13.5.6",
@@ -17368,7 +17368,7 @@
         "@opentelemetry/sdk-trace-base": "2.0.1",
         "@types/mocha": "10.0.8",
         "@types/node": "18.19.130",
-        "@types/sinon": "17.0.4",
+        "@types/sinon": "21.0.1",
         "gcp-metadata": "6.1.1",
         "google-proto-files": "5.0.1",
         "gts": "6.0.2",
@@ -17527,7 +17527,7 @@
         "@opentelemetry/semantic-conventions": "1.36.0",
         "@types/mocha": "10.0.8",
         "@types/node": "18.19.130",
-        "@types/sinon": "17.0.4",
+        "@types/sinon": "21.0.1",
         "bignumber.js": "9.3.1",
         "gts": "6.0.2",
         "mocha": "11.7.2",
diff --git a/packages/opentelemetry-cloud-monitoring-exporter/package.json b/packages/opentelemetry-cloud-monitoring-exporter/package.json
index 871de32e..c53f240c 100644
--- a/packages/opentelemetry-cloud-monitoring-exporter/package.json
+++ b/packages/opentelemetry-cloud-monitoring-exporter/package.json
@@ -52,7 +52,7 @@
     "@types/mocha": "10.0.8",
     "@types/nock": "11.1.0",
     "@types/node": "18.19.130",
-    "@types/sinon": "17.0.4",
+    "@types/sinon": "21.0.1",
     "gts": "6.0.2",
     "mocha": "11.7.2",
     "nock": "13.5.6",
diff --git a/packages/opentelemetry-cloud-trace-exporter/package.json b/packages/opentelemetry-cloud-trace-exporter/package.json
index ce76fcd9..cf9602a5 100644
--- a/packages/opentelemetry-cloud-trace-exporter/package.json
+++ b/packages/opentelemetry-cloud-trace-exporter/package.json
@@ -47,7 +47,7 @@
     "@opentelemetry/sdk-trace-base": "2.0.1",
     "@types/mocha": "10.0.8",
     "@types/node": "18.19.130",
-    "@types/sinon": "17.0.4",
+    "@types/sinon": "21.0.1",
     "gcp-metadata": "6.1.1",
     "google-proto-files": "5.0.1",
     "gts": "6.0.2",
diff --git a/packages/opentelemetry-resource-util/package.json b/packages/opentelemetry-resource-util/package.json
index b35f5a93..95786ade 100644
--- a/packages/opentelemetry-resource-util/package.json
+++ b/packages/opentelemetry-resource-util/package.json
@@ -51,7 +51,7 @@
     "@opentelemetry/semantic-conventions": "1.36.0",
     "@types/mocha": "10.0.8",
     "@types/node": "18.19.130",
-    "@types/sinon": "17.0.4",
+    "@types/sinon": "21.0.1",
     "bignumber.js": "9.3.1",
     "gts": "6.0.2",
     "mocha": "11.7.2",