diff --git a/package-lock.json b/package-lock.json
index 5329ef3..63c0db6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1080,33 +1080,42 @@
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@@ -3758,9 +3761,9 @@
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@@ -4030,6 +4033,12 @@
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+      "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
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@@ -4093,12 +4102,6 @@
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@@ -4372,15 +4375,15 @@
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+        "@sinonjs/commons": "^1.7.0",
+        "@sinonjs/fake-timers": "^6.0.0",
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@@ -4723,9 +4726,9 @@
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-      "integrity": "sha1-Wf3g9DW62suhA6hOnTvGTpa5k30=",
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@@ -5434,27 +5437,39 @@
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-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-7.5.0.tgz",
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-      "requires": {
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-        "@sinonjs/formatio": "^3.2.1",
-        "@sinonjs/samsam": "^3.3.3",
-        "diff": "^3.5.0",
-        "lolex": "^4.2.0",
-        "nise": "^1.5.2",
-        "supports-color": "^5.5.0"
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-9.0.1.tgz",
+      "integrity": "sha512-iTTyiQo5T94jrOx7X7QLBZyucUJ2WvL9J13+96HMfm2CGoJYbIPqRfl6wgNcqmzk0DI28jeGx5bUTXizkrqBmg==",
+      "dev": true,
+      "requires": {
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+        "@sinonjs/fake-timers": "^6.0.0",
+        "@sinonjs/formatio": "^5.0.1",
+        "@sinonjs/samsam": "^5.0.3",
+        "diff": "^4.0.2",
+        "nise": "^4.0.1",
+        "supports-color": "^7.1.0"
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+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
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+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.1.0.tgz",
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           "dev": true,
           "requires": {
-            "has-flag": "^3.0.0"
+            "has-flag": "^4.0.0"
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       }
diff --git a/package.json b/package.json
index 84900cb..48aa90c 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,7 @@
     "rollup-plugin-serve": "^1.0.1",
     "rollup-plugin-terser": "^5.1.2",
     "rollup-plugin-typescript2": "^0.24.3",
-    "sinon": "^7.5.0",
+    "sinon": "^9.0.1",
     "typescript": "^3.6.4"
   }
 }