diff --git a/package-lock.json b/package-lock.json
index 502f3fb..c633108 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,51 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@sinonjs/commons": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/commons/-/commons-1.6.0.tgz",
+      "integrity": "sha512-w4/WHG7C4WWFyE5geCieFJF6MZkbW4VAriol5KlmQXpAQdxvV0p26sqNZOW6Qyw6Y0l9K4g+cHvvczR2sEEpqg==",
+      "requires": {
+        "type-detect": "4.0.8"
+      },
+      "dependencies": {
+        "type-detect": {
+          "version": "4.0.8",
+          "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
+          "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g=="
+        }
+      }
+    },
+    "@sinonjs/formatio": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz",
+      "integrity": "sha512-ls6CAMA6/5gG+O/IdsBcblvnd8qcO/l1TYoNeAzp3wcISOxlPXQEus0mLcdwazEkWjaBdaJ3TaxmNgCLWwvWzg==",
+      "requires": {
+        "samsam": "1.3.0"
+      }
+    },
+    "@sinonjs/samsam": {
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/@sinonjs/samsam/-/samsam-3.3.3.tgz",
+      "integrity": "sha512-bKCMKZvWIjYD0BLGnNrxVuw4dkWCYsLqFOUWw8VgKF/+5Y+mE7LfHWPIYoDXowH+3a9LsWDMo0uAP8YDosPvHQ==",
+      "requires": {
+        "@sinonjs/commons": "^1.3.0",
+        "array-from": "^2.1.1",
+        "lodash": "^4.17.15"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.15",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
+        }
+      }
+    },
+    "@sinonjs/text-encoding": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz",
+      "integrity": "sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ=="
+    },
     "ansi-regex": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
@@ -49,6 +94,11 @@
       "integrity": "sha1-p5SvDAWrF1KEbudTofIRoFugxE8=",
       "dev": true
     },
+    "array-from": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/array-from/-/array-from-2.1.1.tgz",
+      "integrity": "sha1-z+nYwmYoudxa7MYqn12PHzUsEZU="
+    },
     "array-slice": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/array-slice/-/array-slice-1.0.0.tgz",
@@ -539,14 +589,6 @@
         "for-in": "1.0.2"
       }
     },
-    "formatio": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/formatio/-/formatio-1.1.1.tgz",
-      "integrity": "sha1-XtPM1jZVEJc4NGXZlhmRAOhhYek=",
-      "requires": {
-        "samsam": "1.1.2"
-      }
-    },
     "fs-exists-sync": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/fs-exists-sync/-/fs-exists-sync-0.1.0.tgz",
@@ -870,6 +912,11 @@
         "ansi-regex": "2.1.1"
       }
     },
+    "has-flag": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
+    },
     "has-gulplog": {
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/has-gulplog/-/has-gulplog-0.1.0.tgz",
@@ -1178,6 +1225,11 @@
         "text-table": "0.2.0"
       }
     },
+    "just-extend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/just-extend/-/just-extend-4.0.2.tgz",
+      "integrity": "sha512-FrLwOgm+iXrPV+5zDU6Jqu4gCRXbWEQg2O3SKONsWE4w7AXFRkryS53bpWdaL9cNol+AmR3AEYz6kn+o0fCPnw=="
+    },
     "kareem": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/kareem/-/kareem-1.0.1.tgz",
@@ -1284,6 +1336,11 @@
         "lodash._root": "3.0.1"
       }
     },
+    "lodash.get": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
+      "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk="
+    },
     "lodash.isarguments": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz",
@@ -1368,9 +1425,9 @@
       }
     },
     "lolex": {
-      "version": "1.3.2",
-      "resolved": "https://registry.npmjs.org/lolex/-/lolex-1.3.2.tgz",
-      "integrity": "sha1-fD2mL/yzDw9agKJWbKJORdigHzE="
+      "version": "2.7.5",
+      "resolved": "https://registry.npmjs.org/lolex/-/lolex-2.7.5.tgz",
+      "integrity": "sha512-l9x0+1offnKKIzYVjyXU2SiwhXDLekRzKyhnbyldPHvC7BvLPVpdNUNR2KeMAiCN2D/kLNttZgQD5WjSxuBx3Q=="
     },
     "lru-cache": {
       "version": "2.7.3",
@@ -1584,6 +1641,34 @@
       "integrity": "sha1-6f+EFBimsux6SV6TmYT3jxY+bjE=",
       "dev": true
     },
+    "nise": {
+      "version": "1.5.2",
+      "resolved": "https://registry.npmjs.org/nise/-/nise-1.5.2.tgz",
+      "integrity": "sha512-/6RhOUlicRCbE9s+94qCUsyE+pKlVJ5AhIv+jEE7ESKwnbXqulKZ1FYU+XAtHHWE9TinYvAxDUJAb912PwPoWA==",
+      "requires": {
+        "@sinonjs/formatio": "^3.2.1",
+        "@sinonjs/text-encoding": "^0.7.1",
+        "just-extend": "^4.0.2",
+        "lolex": "^4.1.0",
+        "path-to-regexp": "^1.7.0"
+      },
+      "dependencies": {
+        "@sinonjs/formatio": {
+          "version": "3.2.2",
+          "resolved": "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-3.2.2.tgz",
+          "integrity": "sha512-B8SEsgd8gArBLMD6zpRw3juQ2FVSsmdd7qlevyDqzS9WTCtvF55/gAL+h6gue8ZvPYcdiPdvueM/qm//9XzyTQ==",
+          "requires": {
+            "@sinonjs/commons": "^1",
+            "@sinonjs/samsam": "^3.1.0"
+          }
+        },
+        "lolex": {
+          "version": "4.2.0",
+          "resolved": "https://registry.npmjs.org/lolex/-/lolex-4.2.0.tgz",
+          "integrity": "sha512-gKO5uExCXvSm6zbF562EvM+rd1kQDnB9AZBbiQVzf1ZmdDpxUSvpnAaVOP83N/31mRK8Ml8/VE8DMvsAZQ+7wg=="
+        }
+      }
+    },
     "normalize-path": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
@@ -1749,6 +1834,14 @@
       "integrity": "sha1-v8zcjfWxLcUsi0PsONGNcsBLqW0=",
       "dev": true
     },
+    "path-to-regexp": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-1.7.0.tgz",
+      "integrity": "sha1-Wf3g9DW62suhA6hOnTvGTpa5k30=",
+      "requires": {
+        "isarray": "0.0.1"
+      }
+    },
     "plur": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/plur/-/plur-2.1.2.tgz",
@@ -1959,9 +2052,9 @@
       "dev": true
     },
     "samsam": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/samsam/-/samsam-1.1.2.tgz",
-      "integrity": "sha1-vsEf3IOp/aBjQBIQ5AF2wwJNFWc="
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/samsam/-/samsam-1.3.0.tgz",
+      "integrity": "sha512-1HwIYD/8UlOtFS3QO3w7ey+SdSDFE4HRNLZoZRYVQefrOY3l17epswImeB1ijgJFQJodIaHcwkp3r/myBjFVbg=="
     },
     "semver": {
       "version": "4.3.6",
@@ -1988,14 +2081,37 @@
       "dev": true
     },
     "sinon": {
-      "version": "1.17.7",
-      "resolved": "https://registry.npmjs.org/sinon/-/sinon-1.17.7.tgz",
-      "integrity": "sha1-RUKk9JugxFwF6y6d2dID4rjv4L8=",
-      "requires": {
-        "formatio": "1.1.1",
-        "lolex": "1.3.2",
-        "samsam": "1.1.2",
-        "util": "0.10.3"
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/sinon/-/sinon-4.5.0.tgz",
+      "integrity": "sha512-trdx+mB0VBBgoYucy6a9L7/jfQOmvGeaKZT4OOJ+lPAtI8623xyGr8wLiE4eojzBS8G9yXbhx42GHUOVLr4X2w==",
+      "requires": {
+        "@sinonjs/formatio": "^2.0.0",
+        "diff": "^3.1.0",
+        "lodash.get": "^4.4.2",
+        "lolex": "^2.2.0",
+        "nise": "^1.2.0",
+        "supports-color": "^5.1.0",
+        "type-detect": "^4.0.5"
+      },
+      "dependencies": {
+        "diff": {
+          "version": "3.5.0",
+          "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
+          "integrity": "sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA=="
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        },
+        "type-detect": {
+          "version": "4.0.8",
+          "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
+          "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g=="
+        }
       }
     },
     "sinon-chai": {
@@ -2180,21 +2296,6 @@
       "integrity": "sha1-K1viOjK2Onyd640PKNSFcko98ZA=",
       "dev": true
     },
-    "util": {
-      "version": "0.10.3",
-      "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
-      "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
-      "requires": {
-        "inherits": "2.0.1"
-      },
-      "dependencies": {
-        "inherits": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.1.tgz",
-          "integrity": "sha1-sX0I0ya0Qj5Wjv9xn5GwscvfafE="
-        }
-      }
-    },
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
diff --git a/package.json b/package.json
index dfbf5a6..d31e3b3 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
   "homepage": "https://github.com/JohanObrink/mongoose-mock",
   "dependencies": {
     "mongoose": "~4.3.0",
-    "sinon": "^1.16.1",
+    "sinon": "^4.5.0",
     "underscore": "^1.7.0"
   },
   "devDependencies": {