diff --git a/package-lock.json b/package-lock.json
index 47aa7bc..0d69642 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,23 @@
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+      "resolved": "https://registry.npmjs.org/create-react-context/-/create-react-context-0.2.3.tgz",
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-        "loose-envify": "1.3.1",
-        "object-assign": "4.1.1"
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@@ -3629,6 +3645,12 @@
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+      "resolved": "https://registry.npmjs.org/gud/-/gud-1.0.0.tgz",
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+    },
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-      "resolved": "https://registry.npmjs.org/history/-/history-3.3.0.tgz",
-      "integrity": "sha1-/O3M6PEpdTcVRdc1RhAzV5ptrpw=",
+      "version": "4.9.0",
+      "resolved": "https://registry.npmjs.org/history/-/history-4.9.0.tgz",
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-        "invariant": "2.2.4",
-        "loose-envify": "1.3.1",
-        "query-string": "4.3.4",
-        "warning": "3.0.0"
+        "@babel/runtime": "^7.1.2",
+        "loose-envify": "^1.2.0",
+        "resolve-pathname": "^2.2.0",
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+        "tiny-warning": "^1.0.0",
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@@ -3799,10 +3823,21 @@
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-      "dev": true
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/hoist-non-react-statics/-/hoist-non-react-statics-3.3.0.tgz",
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+          "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.8.4.tgz",
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+        }
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@@ -5413,6 +5448,7 @@
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           "bundled": true,
           "dev": true,
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@@ -6569,7 +6605,8 @@
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-          "dev": true
+          "dev": true,
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@@ -8676,16 +8713,6 @@
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@@ -8882,18 +8909,51 @@
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-      "dev": true,
-      "requires": {
-        "create-react-class": "15.6.3",
-        "history": "3.3.0",
-        "hoist-non-react-statics": "2.5.0",
-        "invariant": "2.2.4",
-        "loose-envify": "1.3.1",
-        "prop-types": "15.6.1",
-        "warning": "3.0.0"
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/react-router/-/react-router-4.4.0.tgz",
+      "integrity": "sha512-qTGsOSF2b02zOsUfcnHjw7muI0Ejx+yA2e4P9qqzB2O+N3Icpca4epViXRgkBIvBjagXBtroxXqH0RJhYDMUbg==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.1.2",
+        "create-react-context": "^0.2.2",
+        "history": "^4.9.0",
+        "hoist-non-react-statics": "^3.1.0",
+        "loose-envify": "^1.3.1",
+        "path-to-regexp": "^1.7.0",
+        "prop-types": "^15.6.2",
+        "react-is": "^16.6.0",
+        "tiny-invariant": "^1.0.2",
+        "tiny-warning": "^1.0.0"
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+        "prop-types": {
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+          "resolved": "https://registry.npmjs.org/prop-types/-/prop-types-15.7.2.tgz",
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+          "dev": true,
+          "requires": {
+            "loose-envify": "^1.4.0",
+            "object-assign": "^4.1.1",
+            "react-is": "^16.8.1"
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+            "loose-envify": {
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+              "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
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+              "dev": true,
+              "requires": {
+                "js-tokens": "^3.0.0 || ^4.0.0"
+              }
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+        },
+        "react-is": {
+          "version": "16.8.4",
+          "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.8.4.tgz",
+          "integrity": "sha512-PVadd+WaUDOAciICm/J1waJaSvgq+4rHE/K70j0PFqKhkTBsPv/82UGQJNXAngz1fOQLLxI6z1sEDmJDQhCTAA==",
+          "dev": true
+        }
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     "react-test-renderer": {
@@ -9178,6 +9238,12 @@
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       "dev": true
     },
+    "resolve-pathname": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/resolve-pathname/-/resolve-pathname-2.2.0.tgz",
+      "integrity": "sha512-bAFz9ld18RzJfddgrO2e/0S2O81710++chRMUxHjXOYKF6jTAMrUNZrEZ1PvV0zlhfjidm08iRPdTLPno1FuRg==",
+      "dev": true
+    },
     "resolve-url": {
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       "resolved": "https://registry.npmjs.org/resolve-url/-/resolve-url-0.2.1.tgz",
@@ -9856,12 +9922,6 @@
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-      "resolved": "https://registry.npmjs.org/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz",
-      "integrity": "sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM=",
-      "dev": true
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       "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
@@ -10033,6 +10093,18 @@
         "setimmediate": "1.0.5"
       }
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+    "tiny-invariant": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/tiny-invariant/-/tiny-invariant-1.0.3.tgz",
+      "integrity": "sha512-ytQx8T4DL8PjlX53yYzcIC0WhIZbpR0p1qcYjw2pHu3w6UtgWwFJQ/02cnhOnBBhlFx/edUIfcagCaQSe3KMWg==",
+      "dev": true
+    },
+    "tiny-warning": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/tiny-warning/-/tiny-warning-1.0.2.tgz",
+      "integrity": "sha512-rru86D9CpQRLvsFG5XFdy0KdLAvjdQDyZCsRcuu60WtzFylDM3eAWSxEVz5kzL2Gp544XiUvPbVKtOA/txLi9Q==",
+      "dev": true
+    },
     "to-arraybuffer": {
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       "resolved": "https://registry.npmjs.org/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz",
@@ -10453,6 +10525,12 @@
         "spdx-expression-parse": "3.0.0"
       }
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+    "value-equal": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/value-equal/-/value-equal-0.4.0.tgz",
+      "integrity": "sha512-x+cYdNnaA3CxvMaTX0INdTCN8m8aF2uY9BvEqmxuYp8bL09cs/kWVQPVGcA35fMktdOsP69IgU7wFj/61dJHEw==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
@@ -10487,15 +10565,6 @@
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-      "resolved": "https://registry.npmjs.org/warning/-/warning-3.0.0.tgz",
-      "integrity": "sha1-MuU3fLVy3kqwR1O9+IIcAe1gW3w=",
-      "dev": true,
-      "requires": {
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diff --git a/package.json b/package.json
index 077a010..a2960ed 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "nyc": "^11.1.0",
     "react": "^16.3.0",
     "react-dom": "^16.3.0",
-    "react-router": "^3.0.4",
+    "react-router": "^4.4.0",
     "react-test-renderer": "^15.6.1",
     "sinon": "2.3.8",
     "webpack": "3.3.0",