diff --git a/package-lock.json b/package-lock.json
index 8a51ead..e0c8ada 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -120,33 +120,42 @@
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+    "@sinonjs/fake-timers": {
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+      "resolved": "https://registry.npmjs.org/@sinonjs/fake-timers/-/fake-timers-6.0.1.tgz",
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+      "dev": true,
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-      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.1.tgz",
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+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-5.0.1.tgz",
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       "dev": true,
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-        "@sinonjs/samsam": "^3.1.0"
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-      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-3.3.2.tgz",
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+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-5.1.0.tgz",
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-        "@sinonjs/commons": "^1.0.2",
-        "array-from": "^2.1.1",
-        "lodash": "^4.17.11"
+        "@sinonjs/commons": "^1.6.0",
+        "lodash.get": "^4.4.2",
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@@ -252,12 +261,6 @@
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-      "resolved": "https://registry.npmjs.org/array-from/-/array-from-2.1.1.tgz",
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-      "dev": true
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@@ -1800,9 +1803,9 @@
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+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/just-extend/-/just-extend-4.1.0.tgz",
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@@ -1864,6 +1867,12 @@
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       "dev": true
     },
+    "lodash.get": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
+      "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=",
+      "dev": true
+    },
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@@ -1897,12 +1906,6 @@
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-      "resolved": "https://registry.npmjs.org/lolex/-/lolex-4.1.0.tgz",
-      "integrity": "sha512-BYxIEXiVq5lGIXeVHnsFzqa1TxN5acnKnPCdlZSpzm8viNEOhiigupA4vTQ9HEFQ6nLTQ9wQOgBknJgzUYQ9Aw==",
-      "dev": true
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@@ -2291,15 +2294,15 @@
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-      "resolved": "https://registry.npmjs.org/nise/-/nise-1.5.0.tgz",
-      "integrity": "sha512-Z3sfYEkLFzFmL8KY6xnSJLRxwQwYBjOXi/24lb62ZnZiGA0JUzGGTI6TBIgfCSMIDl9Jlu8SRmHNACLTemDHww==",
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+      "resolved": "https://registry.npmjs.org/nise/-/nise-4.0.4.tgz",
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       "dev": true,
       "requires": {
-        "@sinonjs/formatio": "^3.1.0",
+        "@sinonjs/commons": "^1.7.0",
+        "@sinonjs/fake-timers": "^6.0.0",
         "@sinonjs/text-encoding": "^0.7.1",
         "just-extend": "^4.0.2",
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@@ -4029,9 +4032,9 @@
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-      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-1.7.0.tgz",
-      "integrity": "sha1-Wf3g9DW62suhA6hOnTvGTpa5k30=",
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-1.8.0.tgz",
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       "dev": true,
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@@ -4354,18 +4357,41 @@
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-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-7.3.2.tgz",
-      "integrity": "sha512-thErC1z64BeyGiPvF8aoSg0LEnptSaWE7YhdWWbWXgelOyThent7uKOnnEh9zBxDbKixtr5dEko+ws1sZMuFMA==",
-      "dev": true,
-      "requires": {
-        "@sinonjs/commons": "^1.4.0",
-        "@sinonjs/formatio": "^3.2.1",
-        "@sinonjs/samsam": "^3.3.1",
-        "diff": "^3.5.0",
-        "lolex": "^4.0.1",
-        "nise": "^1.4.10",
-        "supports-color": "^5.5.0"
+      "version": "9.0.3",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-9.0.3.tgz",
+      "integrity": "sha512-IKo9MIM111+smz9JGwLmw5U1075n1YXeAq8YeSFlndCLhAL5KGn6bLgu7b/4AYHTV/LcEMcRm2wU2YiL55/6Pg==",
+      "dev": true,
+      "requires": {
+        "@sinonjs/commons": "^1.7.2",
+        "@sinonjs/fake-timers": "^6.0.1",
+        "@sinonjs/formatio": "^5.0.1",
+        "@sinonjs/samsam": "^5.1.0",
+        "diff": "^4.0.2",
+        "nise": "^4.0.4",
+        "supports-color": "^7.1.0"
+      },
+      "dependencies": {
+        "diff": {
+          "version": "4.0.2",
+          "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
+          "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
+          "dev": true
+        },
+        "has-flag": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+          "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "7.1.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.1.0.tgz",
+          "integrity": "sha512-oRSIpR8pxT1Wr2FquTNnGet79b3BWljqOuoW/h4oBhxJ/HUbX5nX6JSruTkvXDCFMwDPvsaTTbvMLKZWSy0R5g==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^4.0.0"
+          }
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       }
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     "slice-ansi": {
diff --git a/package.json b/package.json
index da9c014..b5dfa7d 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "mocha": "^6.1.4",
     "nyc": "^14.1.1",
     "publish": "^0.6.0",
-    "sinon": "^7.3.2"
+    "sinon": "^9.0.3"
   },
   "dependencies": {}
 }