diff --git a/package-lock.json b/package-lock.json
index fff064c..9824ffe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -174,10 +174,13 @@
       }
     },
     "@types/sinon": {
-      "version": "7.0.11",
-      "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-7.0.11.tgz",
-      "integrity": "sha512-6ee09Ugx6GyEr0opUIakmxIWFNmqYPjkqa3/BuxCBokA0klsOLPgMD5K4q40lH7/yZVuJVzOfQpd7pipwjngkQ==",
-      "dev": true
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-9.0.0.tgz",
+      "integrity": "sha512-v2TkYHkts4VXshMkcmot/H+ERZ2SevKa10saGaJPGCJ8vh3lKrC4u663zYEeRZxep+VbG6YRDtQ6gVqw9dYzPA==",
+      "dev": true,
+      "requires": {
+        "@types/sinonjs__fake-timers": "*"
+      }
     },
     "@types/sinon-chai": {
       "version": "3.2.2",
@@ -189,6 +192,12 @@
         "@types/sinon": "*"
       }
     },
+    "@types/sinonjs__fake-timers": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/@types/sinonjs__fake-timers/-/sinonjs__fake-timers-6.0.1.tgz",
+      "integrity": "sha512-yYezQwGWty8ziyYLdZjwxyMb0CZR49h8JALHGrxjQHWlqGgc8kLdHEgWrgL0uZ29DMvEVBDnHU2Wg36zKSIUtA==",
+      "dev": true
+    },
     "@webassemblyjs/ast": {
       "version": "1.8.5",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.8.5.tgz",
@@ -2251,7 +2260,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -2666,7 +2676,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -2722,6 +2733,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -2765,12 +2777,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
diff --git a/package.json b/package.json
index defbf25..884fd55 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "@types/mocha": "^5.2.6",
     "@types/react": "^16.8.13",
     "@types/react-dom": "^16.8.4",
-    "@types/sinon": "^7.0.11",
+    "@types/sinon": "^9.0.0",
     "@types/sinon-chai": "^3.2.2",
     "chai": "^4.2.0",
     "concurrently": "^4.1.0",