diff --git a/package.json b/package.json
index 0ceaaa2c3..b2dc45964 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "prettier": "^3.3.2",
     "react": "^19.0.0",
     "rxjs": "^7.8.1",
-    "sinon": "^20.0.0",
+    "sinon": "^21.0.0",
     "tslib": "^2.6.3",
     "typescript": "^5.5.3"
   },
diff --git a/packages/integrate/package.json b/packages/integrate/package.json
index 1b21dbca1..a22553f51 100644
--- a/packages/integrate/package.json
+++ b/packages/integrate/package.json
@@ -28,7 +28,7 @@
     "jest": "^29.7.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
-    "sinon": "^20.0.0",
+    "sinon": "^21.0.0",
     "typescript": "^5.5.3"
   }
 }
diff --git a/packages/register/package.json b/packages/register/package.json
index 83d1e997e..a6b799273 100644
--- a/packages/register/package.json
+++ b/packages/register/package.json
@@ -57,7 +57,7 @@
     "@swc/helpers": "^0.5.11",
     "@types/debug": "^4.1.12",
     "lodash": "^4.17.21",
-    "sinon": "^20.0.0",
+    "sinon": "^21.0.0",
     "typescript": "^5.5.3"
   },
   "funding": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 13c03b9a4..2ff5ab4f6 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -87,8 +87,8 @@ importers:
         specifier: ^7.8.1
         version: 7.8.1
       sinon:
-        specifier: ^20.0.0
-        version: 20.0.0
+        specifier: ^21.0.0
+        version: 21.0.0
       tslib:
         specifier: ^2.6.3
         version: 2.8.1
@@ -135,8 +135,8 @@ importers:
         specifier: ^19.0.0
         version: 19.0.0(react@19.0.0)
       sinon:
-        specifier: ^20.0.0
-        version: 20.0.0
+        specifier: ^21.0.0
+        version: 21.0.0
       typescript:
         specifier: ^5.5.3
         version: 5.6.3
@@ -264,8 +264,8 @@ importers:
         specifier: ^4.17.21
         version: 4.17.21
       sinon:
-        specifier: ^20.0.0
-        version: 20.0.0
+        specifier: ^21.0.0
+        version: 21.0.0
       typescript:
         specifier: ^5.5.3
         version: 5.6.3
@@ -4325,8 +4325,8 @@ packages:
   simple-git@3.27.0:
     resolution: {integrity: sha512-ivHoFS9Yi9GY49ogc6/YAi3Fl9ROnF4VyubNylgCkA+RVqLaKWnDSzXOVzya8csELIaWaYNutsEuAhZrtOjozA==}
 
-  sinon@20.0.0:
-    resolution: {integrity: sha512-+FXOAbdnj94AQIxH0w1v8gzNxkawVvNqE3jUzRLptR71Oykeu2RrQXXl/VQjKay+Qnh73fDt/oDfMo6xMeDQbQ==}
+  sinon@21.0.0:
+    resolution: {integrity: sha512-TOgRcwFPbfGtpqvZw+hyqJDvqfapr1qUlOizROIk4bBLjlsjlB00Pg6wMFXNtJRpu+eCZuVOaLatG7M8105kAw==}
 
   sisteransi@1.0.5:
     resolution: {integrity: sha512-bLGGlR1QxBcynn2d5YmDX4MGjlZvy2MRBDRNHLJ8VI6l6+9FUiyTFNJ0IveOSP0bcXgVDPRcfGqA0pjaqUpfVg==}
@@ -9574,7 +9574,7 @@ snapshots:
     transitivePeerDependencies:
       - supports-color
 
-  sinon@20.0.0:
+  sinon@21.0.0:
     dependencies:
       '@sinonjs/commons': 3.0.1
       '@sinonjs/fake-timers': 13.0.5