diff --git a/package-lock.json b/package-lock.json
index 937dd2e..acdc2e0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -305,9 +305,18 @@
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-            "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-7.0.11.tgz",
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+            "resolved": "https://registry.npmjs.org/@types/sinon/-/sinon-9.0.0.tgz",
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+            "dev": true,
+            "requires": {
+                "@types/sinonjs__fake-timers": "*"
+            }
+        },
+        "@types/sinonjs__fake-timers": {
+            "version": "6.0.1",
+            "resolved": "https://registry.npmjs.org/@types/sinonjs__fake-timers/-/sinonjs__fake-timers-6.0.1.tgz",
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@@ -2591,7 +2600,7 @@
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-                    "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+                    "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
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@@ -2606,7 +2615,7 @@
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-                    "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+                    "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
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@@ -3684,7 +3693,7 @@
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-                    "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+                    "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
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@@ -3699,7 +3708,7 @@
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-                    "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+                    "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
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@@ -6957,7 +6966,7 @@
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-                    "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+                    "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
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@@ -6972,7 +6981,7 @@
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-                    "resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+                    "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
                     "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
                     "dev": true,
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diff --git a/package.json b/package.json
index 0103629..35df0fe 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
         "@types/bluebird": "^3.5.26",
         "@types/chai": "^4.1.7",
         "@types/mocha": "^5.2.6",
-        "@types/sinon": "^7.0.11",
+        "@types/sinon": "^9.0.0",
         "bluebird": "^3.5.4",
         "browserify-versionify": "^1.0.6",
         "chai": "^4.2.0",