diff --git a/package.json b/package.json
index b76d18a..5db941b 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
     "gatsby-link": "^1.6.40",
     "gatsby-plugin-manifest": "^1.0.27",
     "gatsby-plugin-netlify": "^1.0.21",
+    "gatsby-plugin-offline": "^1.0.18",
     "gatsby-plugin-page-transitions": "^1.0.7",
     "gatsby-plugin-react-helmet": "^2.0.10",
     "gatsby-plugin-sharp": "^1.6.48",
diff --git a/yarn.lock b/yarn.lock
index 37fe5f8..f515cd8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2851,6 +2851,12 @@ dom-serializer@0, dom-serializer@~0.1.0:
     domelementtype "~1.1.1"
     entities "~1.1.1"
 
+dom-urls@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/dom-urls/-/dom-urls-1.1.0.tgz#001ddf81628cd1e706125c7176f53ccec55d918e"
+  dependencies:
+    urijs "^1.16.1"
+
 dom-walk@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.1.tgz#672226dc74c8f799ad35307df936aba11acd6018"
@@ -3132,7 +3138,7 @@ es6-promise@^3.0.2:
   version "3.3.1"
   resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-3.3.1.tgz#a08cdde84ccdbf34d027a1451bc91d4bcd28a613"
 
-es6-promise@^4.1.0:
+es6-promise@^4.0.5, es6-promise@^4.1.0:
   version "4.2.4"
   resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.4.tgz#dc4221c2b16518760bd8c39a52d8f356fc00ed29"
 
@@ -3879,6 +3885,13 @@ gatsby-plugin-netlify@^1.0.21:
     lodash "^4.17.4"
     webpack-assets-manifest "^1.0.0"
 
+gatsby-plugin-offline@^1.0.18:
+  version "1.0.18"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-offline/-/gatsby-plugin-offline-1.0.18.tgz#2ee2a24d2f69fcc43a015132f07141b69295318d"
+  dependencies:
+    babel-runtime "^6.26.0"
+    sw-precache "^5.0.0"
+
 gatsby-plugin-page-creator@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/gatsby-plugin-page-creator/-/gatsby-plugin-page-creator-1.0.1.tgz#6bad33a7f46cb5b87dbdaacc3c1bbd81ac63bc20"
@@ -5810,7 +5823,7 @@ lodash.debounce@^4.0.6:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
 
-lodash.defaults@^4.0.1:
+lodash.defaults@^4.0.1, lodash.defaults@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.defaults/-/lodash.defaults-4.2.0.tgz#d09178716ffea4dde9e5fb7b37f6f0802274580c"
 
@@ -5938,7 +5951,7 @@ lodash.template@^3.0.0:
     lodash.restparam "^3.0.0"
     lodash.templatesettings "^3.0.0"
 
-lodash.template@^4.2.4:
+lodash.template@^4.2.4, lodash.template@^4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/lodash.template/-/lodash.template-4.4.0.tgz#e73a0385c8355591746e020b99679c690e68fba0"
   dependencies:
@@ -6205,7 +6218,7 @@ memory-fs@~0.4.1:
     errno "^0.1.3"
     readable-stream "^2.0.1"
 
-meow@^3.1.0, meow@^3.3.0, meow@^3.5.0:
+meow@^3.1.0, meow@^3.3.0, meow@^3.5.0, meow@^3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
   dependencies:
@@ -7088,7 +7101,7 @@ path-to-regexp@0.1.7:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
 
-path-to-regexp@^1.7.0:
+path-to-regexp@^1.0.1, path-to-regexp@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.7.0.tgz#59fde0f435badacba103a84e9d3bc64e96b9937d"
   dependencies:
@@ -8976,6 +8989,10 @@ serve@^6.4.0:
     send "0.16.2"
     update-check "1.5.1"
 
+serviceworker-cache-polyfill@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/serviceworker-cache-polyfill/-/serviceworker-cache-polyfill-4.0.0.tgz#de19ee73bef21ab3c0740a37b33db62464babdeb"
+
 set-blocking@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/set-blocking/-/set-blocking-1.0.0.tgz#cd5e5d938048df1ac92dfe92e1f16add656f5ec5"
@@ -9681,6 +9698,28 @@ svgo@^0.7.0, svgo@^0.7.2:
     sax "~1.2.1"
     whet.extend "~0.9.9"
 
+sw-precache@^5.0.0:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/sw-precache/-/sw-precache-5.2.1.tgz#06134f319eec68f3b9583ce9a7036b1c119f7179"
+  dependencies:
+    dom-urls "^1.1.0"
+    es6-promise "^4.0.5"
+    glob "^7.1.1"
+    lodash.defaults "^4.2.0"
+    lodash.template "^4.4.0"
+    meow "^3.7.0"
+    mkdirp "^0.5.1"
+    pretty-bytes "^4.0.2"
+    sw-toolbox "^3.4.0"
+    update-notifier "^2.3.0"
+
+sw-toolbox@^3.4.0:
+  version "3.6.0"
+  resolved "https://registry.yarnpkg.com/sw-toolbox/-/sw-toolbox-3.6.0.tgz#26df1d1c70348658e4dea2884319149b7b3183b5"
+  dependencies:
+    path-to-regexp "^1.0.1"
+    serviceworker-cache-polyfill "^4.0.0"
+
 symbol-observable@^1.0.2, symbol-observable@^1.0.3:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"
@@ -10254,6 +10293,10 @@ update-notifier@^2.3.0:
     semver-diff "^2.0.0"
     xdg-basedir "^3.0.0"
 
+urijs@^1.16.1:
+  version "1.19.1"
+  resolved "https://registry.yarnpkg.com/urijs/-/urijs-1.19.1.tgz#5b0ff530c0cbde8386f6342235ba5ca6e995d25a"
+
 urix@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"