diff --git a/package.json b/package.json
index 621e8c9..5d8ffe7 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "koa-router": "9.4.0",
     "mocha": "8.1.1",
     "prettier": "2.0.5",
-    "sinon": "9.0.3",
+    "sinon": "9.2.4",
     "sinon-chai": "3.5.0",
     "supertest": "4.0.2"
   },
diff --git a/yarn.lock b/yarn.lock
index a8f3534..731d0d5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16,13 +16,20 @@
     esutils "^2.0.2"
     js-tokens "^4.0.0"
 
-"@sinonjs/commons@^1", "@sinonjs/commons@^1.6.0", "@sinonjs/commons@^1.7.0", "@sinonjs/commons@^1.7.2":
+"@sinonjs/commons@^1.6.0", "@sinonjs/commons@^1.7.0":
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.1.tgz#e7df00f98a203324f6dc7cc606cad9d4a8ab2217"
   integrity sha512-892K+kWUUi3cl+LlqEWIDrhvLgdL79tECi8JZUyq6IviKy/DNhuzCRlbHUjxK89f4ypPMMaFnFuR9Ie6DoIMsw==
   dependencies:
     type-detect "4.0.8"
 
+"@sinonjs/commons@^1.8.1":
+  version "1.8.2"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.2.tgz#858f5c4b48d80778fde4b9d541f27edc0d56488b"
+  integrity sha512-sruwd86RJHdsVf/AtBoijDmUqJp3B6hF/DGC23C+JaegnDHaZyewCjoVGTdg3J0uz3Zs7NnIT05OBOmML72lQw==
+  dependencies:
+    type-detect "4.0.8"
+
 "@sinonjs/fake-timers@^6.0.0", "@sinonjs/fake-timers@^6.0.1":
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/@sinonjs/fake-timers/-/fake-timers-6.0.1.tgz#293674fccb3262ac782c7aadfdeca86b10c75c40"
@@ -30,18 +37,10 @@
   dependencies:
     "@sinonjs/commons" "^1.7.0"
 
-"@sinonjs/formatio@^5.0.1":
-  version "5.0.1"
-  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-5.0.1.tgz#f13e713cb3313b1ab965901b01b0828ea6b77089"
-  integrity sha512-KaiQ5pBf1MpS09MuA0kp6KBQt2JUOQycqVG1NZXvzeaXe5LGFqAKueIS0bw4w0P9r7KuBSVdUk5QjXsUdu2CxQ==
-  dependencies:
-    "@sinonjs/commons" "^1"
-    "@sinonjs/samsam" "^5.0.2"
-
-"@sinonjs/samsam@^5.0.2", "@sinonjs/samsam@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-5.1.0.tgz#3afe719232b541bb6cf3411a4c399a188de21ec0"
-  integrity sha512-42nyaQOVunX5Pm6GRJobmzbS7iLI+fhERITnETXzzwDZh+TtDr/Au3yAvXVjFmZ4wEUaE4Y3NFZfKv0bV0cbtg==
+"@sinonjs/samsam@^5.3.1":
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-5.3.1.tgz#375a45fe6ed4e92fca2fb920e007c48232a6507f"
+  integrity sha512-1Hc0b1TtyfBu8ixF/tpfSHTVWKwCBLY4QJbkgnE7HcwyvT2xArDxb4K7dMgqRm3szI+LJbzmW/s4xxEhv6hwDg==
   dependencies:
     "@sinonjs/commons" "^1.6.0"
     lodash.get "^4.4.2"
@@ -2197,15 +2196,14 @@ sinon-chai@3.5.0:
   resolved "https://registry.yarnpkg.com/sinon-chai/-/sinon-chai-3.5.0.tgz#c9a78304b0e15befe57ef68e8a85a00553f5c60e"
   integrity sha512-IifbusYiQBpUxxFJkR3wTU68xzBN0+bxCScEaKMjBvAQERg6FnTTc1F17rseLb1tjmkJ23730AXpFI0c47FgAg==
 
-sinon@9.0.3:
-  version "9.0.3"
-  resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.0.3.tgz#bffc3ec28c936332cd2a41833547b9eed201ecff"
-  integrity sha512-IKo9MIM111+smz9JGwLmw5U1075n1YXeAq8YeSFlndCLhAL5KGn6bLgu7b/4AYHTV/LcEMcRm2wU2YiL55/6Pg==
+sinon@9.2.4:
+  version "9.2.4"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.2.4.tgz#e55af4d3b174a4443a8762fa8421c2976683752b"
+  integrity sha512-zljcULZQsJxVra28qIAL6ow1Z9tpattkCTEJR4RBP3TGc00FcttsP5pK284Nas5WjMZU5Yzy3kAIp3B3KRf5Yg==
   dependencies:
-    "@sinonjs/commons" "^1.7.2"
+    "@sinonjs/commons" "^1.8.1"
     "@sinonjs/fake-timers" "^6.0.1"
-    "@sinonjs/formatio" "^5.0.1"
-    "@sinonjs/samsam" "^5.1.0"
+    "@sinonjs/samsam" "^5.3.1"
     diff "^4.0.2"
     nise "^4.0.4"
     supports-color "^7.1.0"