diff --git a/package.json b/package.json
index 621e8c9..85a0aa7 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": "9.2.1",
     "sinon-chai": "3.5.0",
     "supertest": "4.0.2"
   },
diff --git a/yarn.lock b/yarn.lock
index a8f3534..00d782c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16,7 +16,7 @@
     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", "@sinonjs/commons@^1.6.0", "@sinonjs/commons@^1.7.0", "@sinonjs/commons@^1.8.1":
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.1.tgz#e7df00f98a203324f6dc7cc606cad9d4a8ab2217"
   integrity sha512-892K+kWUUi3cl+LlqEWIDrhvLgdL79tECi8JZUyq6IviKy/DNhuzCRlbHUjxK89f4ypPMMaFnFuR9Ie6DoIMsw==
@@ -38,7 +38,7 @@
     "@sinonjs/commons" "^1"
     "@sinonjs/samsam" "^5.0.2"
 
-"@sinonjs/samsam@^5.0.2", "@sinonjs/samsam@^5.1.0":
+"@sinonjs/samsam@^5.0.2":
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-5.1.0.tgz#3afe719232b541bb6cf3411a4c399a188de21ec0"
   integrity sha512-42nyaQOVunX5Pm6GRJobmzbS7iLI+fhERITnETXzzwDZh+TtDr/Au3yAvXVjFmZ4wEUaE4Y3NFZfKv0bV0cbtg==
@@ -47,6 +47,15 @@
     lodash.get "^4.4.2"
     type-detect "^4.0.8"
 
+"@sinonjs/samsam@^5.2.0":
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-5.2.0.tgz#fcff83ab86f83b5498f4a967869c079408d9b5eb"
+  integrity sha512-CaIcyX5cDsjcW/ab7HposFWzV1kC++4HNsfnEdFJa7cP1QIuILAKV+BgfeqRXhcnSAc76r/Rh/O5C+300BwUIw==
+  dependencies:
+    "@sinonjs/commons" "^1.6.0"
+    lodash.get "^4.4.2"
+    type-detect "^4.0.8"
+
 "@sinonjs/text-encoding@^0.7.1":
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz#8da5c6530915653f3a1f38fd5f101d8c3f8079c5"
@@ -2197,15 +2206,15 @@ 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@9.2.1:
+  version "9.2.1"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-9.2.1.tgz#64cc88beac718557055bd8caa526b34a2231be6d"
+  integrity sha512-naPfsamB5KEE1aiioaoqJ6MEhdUs/2vtI5w1hPAXX/UwvoPjXcwh1m5HiKx0HGgKR8lQSoFIgY5jM6KK8VrS9w==
   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" "^5.2.0"
     diff "^4.0.2"
     nise "^4.0.4"
     supports-color "^7.1.0"