diff --git a/packages/bot/package.json b/packages/bot/package.json
index c368c18ec..e72a91346 100644
--- a/packages/bot/package.json
+++ b/packages/bot/package.json
@@ -50,7 +50,7 @@
     "c8": "^10.1.3",
     "chai": "^5.2.0",
     "mocha": "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch",
-    "sinon": "^19.0.2",
+    "sinon": "^21.0.0",
     "ts-node": "^10.9.2",
     "tsconfig": "*",
     "typescript": "^5.8.3"
diff --git a/packages/gateway/package.json b/packages/gateway/package.json
index d31112d07..1f6f4729d 100644
--- a/packages/gateway/package.json
+++ b/packages/gateway/package.json
@@ -53,7 +53,7 @@
     "c8": "^10.1.3",
     "chai": "^5.2.0",
     "mocha": "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch",
-    "sinon": "^19.0.2",
+    "sinon": "^21.0.0",
     "ts-node": "^10.9.2",
     "tsconfig": "*",
     "typescript": "^5.8.3"
diff --git a/packages/rest/package.json b/packages/rest/package.json
index 16590df56..8381df426 100644
--- a/packages/rest/package.json
+++ b/packages/rest/package.json
@@ -51,7 +51,7 @@
     "chai-as-promised": "^8.0.1",
     "dotenv": "^16.4.7",
     "mocha": "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch",
-    "sinon": "^19.0.2",
+    "sinon": "^21.0.0",
     "ts-node": "^10.9.2",
     "tsconfig": "*",
     "typescript": "^5.8.3"
diff --git a/packages/utils/package.json b/packages/utils/package.json
index f6953dd74..a313016b2 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -46,7 +46,7 @@
     "c8": "^10.1.3",
     "chai": "^5.2.0",
     "mocha": "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch",
-    "sinon": "^19.0.2",
+    "sinon": "^21.0.0",
     "ts-node": "^10.9.2",
     "tsconfig": "*",
     "typescript": "^5.8.3"
diff --git a/yarn.lock b/yarn.lock
index 4aa0c359c..355050aa2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -130,7 +130,7 @@ __metadata:
     c8: "npm:^10.1.3"
     chai: "npm:^5.2.0"
     mocha: "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch"
-    sinon: "npm:^19.0.2"
+    sinon: "npm:^21.0.0"
     ts-node: "npm:^10.9.2"
     tsconfig: "npm:*"
     typescript: "npm:^5.8.3"
@@ -155,7 +155,7 @@ __metadata:
     chai: "npm:^5.2.0"
     fzstd: "npm:^0.1.1"
     mocha: "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch"
-    sinon: "npm:^19.0.2"
+    sinon: "npm:^21.0.0"
     ts-node: "npm:^10.9.2"
     tsconfig: "npm:*"
     typescript: "npm:^5.8.3"
@@ -185,7 +185,7 @@ __metadata:
     chai-as-promised: "npm:^8.0.1"
     dotenv: "npm:^16.4.7"
     mocha: "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch"
-    sinon: "npm:^19.0.2"
+    sinon: "npm:^21.0.0"
     ts-node: "npm:^10.9.2"
     tsconfig: "npm:*"
     typescript: "npm:^5.8.3"
@@ -224,7 +224,7 @@ __metadata:
     c8: "npm:^10.1.3"
     chai: "npm:^5.2.0"
     mocha: "patch:mocha@npm%3A11.0.2#~/.yarn/patches/mocha-npm-11.0.2-b5d6b95284.patch"
-    sinon: "npm:^19.0.2"
+    sinon: "npm:^21.0.0"
     ts-node: "npm:^10.9.2"
     tsconfig: "npm:*"
     typescript: "npm:^5.8.3"
@@ -597,7 +597,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@sinonjs/fake-timers@npm:^13.0.1, @sinonjs/fake-timers@npm:^13.0.2":
+"@sinonjs/fake-timers@npm:^13.0.5":
   version: 13.0.5
   resolution: "@sinonjs/fake-timers@npm:13.0.5"
   dependencies:
@@ -617,13 +617,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@sinonjs/text-encoding@npm:^0.7.3":
-  version: 0.7.3
-  resolution: "@sinonjs/text-encoding@npm:0.7.3"
-  checksum: 10c0/b112d1e97af7f99fbdc63c7dbcd35d6a60764dfec85cfcfff532e55cce8ecd8453f9fa2139e70aea47142c940fd90cd201d19f370b9a0141700d8a6de3116815
-  languageName: node
-  linkType: hard
-
 "@swc/cli@npm:^0.5.2":
   version: 0.5.2
   resolution: "@swc/cli@npm:0.5.2"
@@ -2573,13 +2566,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"just-extend@npm:^6.2.0":
-  version: 6.2.0
-  resolution: "just-extend@npm:6.2.0"
-  checksum: 10c0/d41cbdb6d85b986d4deaf2144d81d4f7266cd408fc95189d046d63f610c2dc486b141aeb6ef319c2d76fe904d45a6bb31f19b098ff0427c35688e0c383fc0511
-  languageName: node
-  linkType: hard
-
 "keyv@npm:^4.5.3":
   version: 4.5.4
   resolution: "keyv@npm:4.5.4"
@@ -3088,19 +3074,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nise@npm:^6.1.1":
-  version: 6.1.1
-  resolution: "nise@npm:6.1.1"
-  dependencies:
-    "@sinonjs/commons": "npm:^3.0.1"
-    "@sinonjs/fake-timers": "npm:^13.0.1"
-    "@sinonjs/text-encoding": "npm:^0.7.3"
-    just-extend: "npm:^6.2.0"
-    path-to-regexp: "npm:^8.1.0"
-  checksum: 10c0/09471adb738dc3be2981cc7815c90879ed6a5a3e162202ca66e12f9a5a0956bea718d0ec2f0c07acc26e3f958481b8fb30c30da76c13620e922f3b9dcd249c50
-  languageName: node
-  linkType: hard
-
 "node-gyp@npm:latest":
   version: 9.3.1
   resolution: "node-gyp@npm:9.3.1"
@@ -3266,13 +3239,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"path-to-regexp@npm:^8.1.0":
-  version: 8.2.0
-  resolution: "path-to-regexp@npm:8.2.0"
-  checksum: 10c0/ef7d0a887b603c0a142fad16ccebdcdc42910f0b14830517c724466ad676107476bba2fe9fffd28fd4c141391ccd42ea426f32bb44c2c82ecaefe10c37b90f5a
-  languageName: node
-  linkType: hard
-
 "pathval@npm:^2.0.0":
   version: 2.0.0
   resolution: "pathval@npm:2.0.0"
@@ -3596,17 +3562,16 @@ __metadata:
   languageName: node
   linkType: hard
 
-"sinon@npm:^19.0.2":
-  version: 19.0.2
-  resolution: "sinon@npm:19.0.2"
+"sinon@npm:^21.0.0":
+  version: 21.0.0
+  resolution: "sinon@npm:21.0.0"
   dependencies:
     "@sinonjs/commons": "npm:^3.0.1"
-    "@sinonjs/fake-timers": "npm:^13.0.2"
+    "@sinonjs/fake-timers": "npm:^13.0.5"
     "@sinonjs/samsam": "npm:^8.0.1"
     diff: "npm:^7.0.0"
-    nise: "npm:^6.1.1"
     supports-color: "npm:^7.2.0"
-  checksum: 10c0/a5d988d55643677e55bbc70c3aa6c9977f8a7cf55d157278ea8e4474d9acbec16d9c44056bd763e4f5988daf0fb75370099cf90105243dbb8742978478d53c40
+  checksum: 10c0/4a60ef1e2685b716232a30dfea22bf62c0a8a8c9904a3cb053f30794cc2a3bbd470f0e615fe8d8f4424e9af48b3a9f8cb67f07eabeb9fb7b8ed50bd0f5f50dd9
   languageName: node
   linkType: hard