diff --git a/package-lock.json b/package-lock.json
index e7fc76b79..a44d889c9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1207,9 +1207,9 @@
       }
     },
     "node_modules/@sinonjs/fake-timers": {
-      "version": "15.1.1",
-      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-15.1.1.tgz",
-      "integrity": "sha512-cO5W33JgAPbOh07tvZjUOJ7oWhtaqGHiZw+11DPbyqh2kHTBc3eF/CjJDeQ4205RLQsX6rxCuYOroFQwl7JDRw==",
+      "version": "15.4.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-15.4.0.tgz",
+      "integrity": "sha512-DsG+8/LscQIQg68J6Ef3dv10u6nVyetYn923s3/sus5eaGfTo1of5WMZSLf0UJc9KDuKPilPH0UDJCjvNbDNCA==",
       "dev": true,
       "license": "BSD-3-Clause",
       "dependencies": {
@@ -6529,10 +6529,10 @@
       },
       "devDependencies": {
         "@types/proxyquire": "^1.3.31",
-        "@types/sinon": "^21",
+        "@types/sinon": "^22",
         "nodemon": "^3.1.0",
         "proxyquire": "^2.1.3",
-        "sinon": "^21",
+        "sinon": "^22",
         "tsd": "^0.33.0",
         "undici": "^7.25.0",
         "ws": "^8"
@@ -6545,6 +6545,17 @@
         "undici": "^7.0.0"
       }
     },
+    "packages/socket-mode/node_modules/@sinonjs/samsam": {
+      "version": "10.0.2",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-10.0.2.tgz",
+      "integrity": "sha512-8lVwD1Df1BmzoaOLhMcGGcz/Jyr5QY2KSB75/YK1QgKzoabTeLdIVyhXNZK9ojfSKSdirbXqdbsXXqP9/Ve8+A==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@sinonjs/commons": "^3.0.1",
+        "type-detect": "^4.1.0"
+      }
+    },
     "packages/socket-mode/node_modules/@types/node": {
       "version": "25.6.0",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-25.6.0.tgz",
@@ -6554,6 +6565,53 @@
         "undici-types": "~7.19.0"
       }
     },
+    "packages/socket-mode/node_modules/@types/sinon": {
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-22.0.0.tgz",
+      "integrity": "sha512-TDbVpbccc2HfiqHR09Argj3mHV1KMW7sCCKj52fsl8lbRLkEn7fB1966EWhOKWUBcqfBueZuPoA7/OK1CKiy3g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/sinonjs__fake-timers": "*"
+      }
+    },
+    "packages/socket-mode/node_modules/diff": {
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-9.0.0.tgz",
+      "integrity": "sha512-svtcdpS8CgJyqAjEQIXdb3OjhFVVYjzGAPO8WGCmRbrml64SPw/jJD4GoE98aR7r25A0XcgrK3F02yw9R/vhQw==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=0.3.1"
+      }
+    },
+    "packages/socket-mode/node_modules/sinon": {
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-22.0.0.tgz",
+      "integrity": "sha512-sq/6DpdXOrLyfbKlXLg/Usc7xu8YXPeLkOFZRvA3bNUSA2lhbrZ06yuXbH1fkzBPCbz9O10+7hznzUsjaYNm0Q==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "@sinonjs/commons": "^3.0.1",
+        "@sinonjs/fake-timers": "^15.4.0",
+        "@sinonjs/samsam": "^10.0.2",
+        "diff": "^9.0.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/sinon"
+      }
+    },
+    "packages/socket-mode/node_modules/type-detect": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.1.0.tgz",
+      "integrity": "sha512-Acylog8/luQ8L7il+geoSxhEkazvkslg7PSNKOX59mbB9cOveP5aq9h74Y7YU8yDpJwetzQQrfIwtf4Wp4LKcw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=4"
+      }
+    },
     "packages/socket-mode/node_modules/undici": {
       "version": "7.25.0",
       "resolved": "https://registry.npmjs.org/undici/-/undici-7.25.0.tgz",
diff --git a/packages/socket-mode/package.json b/packages/socket-mode/package.json
index 867c45579..ae21309e3 100644
--- a/packages/socket-mode/package.json
+++ b/packages/socket-mode/package.json
@@ -61,10 +61,10 @@
   },
   "devDependencies": {
     "@types/proxyquire": "^1.3.31",
-    "@types/sinon": "^21",
+    "@types/sinon": "^22",
     "nodemon": "^3.1.0",
     "proxyquire": "^2.1.3",
-    "sinon": "^21",
+    "sinon": "^22",
     "tsd": "^0.33.0",
     "undici": "^7.25.0",
     "ws": "^8"