diff --git a/gistbrowser/package.json b/gistbrowser/package.json
index d5c309e..b4074f8 100644
--- a/gistbrowser/package.json
+++ b/gistbrowser/package.json
@@ -8,7 +8,7 @@
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
     "react-highlight": "^0.10.0",
-    "react-router-dom": "^4.2.2",
+    "react-router-dom": "^4.3.1",
     "react-scripts": "1.0.17",
     "react-syntax-highlighter": "^6.1.1"
   },
diff --git a/gistbrowser/yarn.lock b/gistbrowser/yarn.lock
index 8dbd5e6..00a99ec 100644
--- a/gistbrowser/yarn.lock
+++ b/gistbrowser/yarn.lock
@@ -3008,9 +3008,10 @@ hoek@4.x.x:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.0.tgz#72d9d0754f7fe25ca2d01ad8f8f9a9449a89526d"
 
-hoist-non-react-statics@^2.3.0:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/hoist-non-react-statics/-/hoist-non-react-statics-2.3.1.tgz#343db84c6018c650778898240135a1420ee22ce0"
+hoist-non-react-statics@^2.5.0:
+  version "2.5.5"
+  resolved "https://registry.yarnpkg.com/hoist-non-react-statics/-/hoist-non-react-statics-2.5.5.tgz#c5903cf409c0dfd908f388e619d86b9c1174cb47"
+  integrity sha512-rqcy4pJo55FTTLWt+bU8ukscqHeE/e9KWvsOW2b/a3afxQZhwkQdT1rPPCJ0rYXdj4vNcasY8zHTH+jF/qStxw==
 
 home-or-tmp@^2.0.0:
   version "2.0.0"
@@ -3239,6 +3240,13 @@ invariant@^2.2.1, invariant@^2.2.2:
   dependencies:
     loose-envify "^1.0.0"
 
+invariant@^2.2.4:
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"
+  integrity sha512-phJfQVBuaJM5raOpJjSfkiD6BpbCE4Ns//LaXl6wGYtUBY83nWS6Rf9tXm2e8VaK60JEjYldbPif/A2B1C2gNA==
+  dependencies:
+    loose-envify "^1.0.0"
+
 invert-kv@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
@@ -3758,6 +3766,11 @@ js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
+"js-tokens@^3.0.0 || ^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
+  integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
+
 js-yaml@^3.4.3, js-yaml@^3.7.0, js-yaml@^3.9.1:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
@@ -4035,6 +4048,13 @@ loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.2.0, loose-envify@^1.3
   dependencies:
     js-tokens "^3.0.0"
 
+loose-envify@^1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
+  integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
+  dependencies:
+    js-tokens "^3.0.0 || ^4.0.0"
+
 loud-rejection@^1.0.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/loud-rejection/-/loud-rejection-1.6.0.tgz#5b46f80147edee578870f086d04821cf998e551f"
@@ -5062,7 +5082,7 @@ promise@^7.1.1:
   dependencies:
     asap "~2.0.3"
 
-prop-types@^15.5.10, prop-types@^15.5.4, prop-types@^15.6.0:
+prop-types@^15.5.10, prop-types@^15.6.0:
   version "15.6.0"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
   dependencies:
@@ -5070,6 +5090,15 @@ prop-types@^15.5.10, prop-types@^15.5.4, prop-types@^15.6.0:
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
+prop-types@^15.6.1:
+  version "15.7.2"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
+  integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==
+  dependencies:
+    loose-envify "^1.4.0"
+    object-assign "^4.1.1"
+    react-is "^16.8.1"
+
 property-information@^3.0.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/property-information/-/property-information-3.2.0.tgz#fd1483c8fbac61808f5fe359e7693a1f48a58331"
@@ -5243,28 +5272,35 @@ react-highlight@^0.10.0:
     react "^15.5.4"
     react-dom "^15.5.4"
 
-react-router-dom@^4.2.2:
-  version "4.2.2"
-  resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-4.2.2.tgz#c8a81df3adc58bba8a76782e946cbd4eae649b8d"
+react-is@^16.8.1:
+  version "16.13.1"
+  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.13.1.tgz#789729a4dc36de2999dc156dd6c1d9c18cea56a4"
+  integrity sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==
+
+react-router-dom@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-4.3.1.tgz#4c2619fc24c4fa87c9fd18f4fb4a43fe63fbd5c6"
+  integrity sha512-c/MlywfxDdCp7EnB7YfPMOfMD3tOtIjrQlj/CKfNMBxdmpJP8xcz5P/UAFn3JbnQCNUxsHyVVqllF9LhgVyFCA==
   dependencies:
     history "^4.7.2"
-    invariant "^2.2.2"
+    invariant "^2.2.4"
     loose-envify "^1.3.1"
-    prop-types "^15.5.4"
-    react-router "^4.2.0"
-    warning "^3.0.0"
+    prop-types "^15.6.1"
+    react-router "^4.3.1"
+    warning "^4.0.1"
 
-react-router@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/react-router/-/react-router-4.2.0.tgz#61f7b3e3770daeb24062dae3eedef1b054155986"
+react-router@^4.3.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/react-router/-/react-router-4.3.1.tgz#aada4aef14c809cb2e686b05cee4742234506c4e"
+  integrity sha512-yrvL8AogDh2X42Dt9iknk4wF4V8bWREPirFfS9gLU1huk6qK41sg7Z/1S81jjTrGHxa3B8R3J6xIkDAA6CVarg==
   dependencies:
     history "^4.7.2"
-    hoist-non-react-statics "^2.3.0"
-    invariant "^2.2.2"
+    hoist-non-react-statics "^2.5.0"
+    invariant "^2.2.4"
     loose-envify "^1.3.1"
     path-to-regexp "^1.7.0"
-    prop-types "^15.5.4"
-    warning "^3.0.0"
+    prop-types "^15.6.1"
+    warning "^4.0.1"
 
 react-scripts@1.0.17:
   version "1.0.17"
@@ -6485,6 +6521,13 @@ warning@^3.0.0:
   dependencies:
     loose-envify "^1.0.0"
 
+warning@^4.0.1:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/warning/-/warning-4.0.3.tgz#16e9e077eb8a86d6af7d64aa1e05fd85b4678ca3"
+  integrity sha512-rpJyN222KWIvHJ/F53XSZv0Zl/accqHR8et1kpaMTD/fLCRxtV8iX8czMzY7sVZupTI3zcUTg8eycS2kNF9l6w==
+  dependencies:
+    loose-envify "^1.0.0"
+
 watch@~0.10.0:
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/watch/-/watch-0.10.0.tgz#77798b2da0f9910d595f1ace5b0c2258521f21dc"