diff --git a/package.json b/package.json
index 77fe504..e30b18f 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "sequelize": "^3.30.2",
     "serve-static": "^1.11.1",
     "shimmer": "^1.1.0",
-    "socket.io": "^1.7.2",
+    "socket.io": "^2.4.0",
     "socket.io-client": "^1.7.2",
     "socket.io-express-session": "^0.1.3",
     "socket.io-redis": "^3.1.0",
diff --git a/yarn.lock b/yarn.lock
index d2611c4..d95ac0d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -165,13 +165,6 @@ abbrev@1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
 
-accepts@1.3.3:
-  version "1.3.3"
-  resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.3.tgz#c3ca7434938648c3e0d9c1e328dd68b622c284ca"
-  dependencies:
-    mime-types "~2.1.11"
-    negotiator "0.6.1"
-
 accepts@~1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.4.tgz#86246758c7dd6d21a6474ff084a4740ec05eb21f"
@@ -316,6 +309,10 @@ arraybuffer.slice@0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/arraybuffer.slice/-/arraybuffer.slice-0.0.6.tgz#f33b2159f0532a3f3107a272c0ccfbd1ad2979ca"
 
+arraybuffer.slice@~0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz#3bbc4275dd584cc1b10809b89d4e8b63a69e7675"
+
 arrify@^1.0.0, arrify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
@@ -665,13 +662,17 @@ balanced-match@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
 
+base64-arraybuffer@0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.4.tgz#9818c79e059b1355f97e0428a017c838e90ba812"
+
 base64-arraybuffer@0.1.5:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
 
-base64id@1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/base64id/-/base64id-1.0.0.tgz#47688cb99bb6804f0e06d3e763b1c32e57d8e6b6"
+base64id@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/base64id/-/base64id-2.0.0.tgz#2770ac6bc47d312af97a8bf9a634342e0cd25cb6"
 
 basic-auth@^1.0.4:
   version "1.1.0"
@@ -701,6 +702,10 @@ blob@0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.4.tgz#bcf13052ca54463f30f9fc7e95b9a47630a94921"
 
+blob@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
+
 block-stream@*:
   version "0.0.9"
   resolved "https://registry.yarnpkg.com/block-stream/-/block-stream-0.0.9.tgz#13ebfe778a03205cfe03751481ebb4b3300c126a"
@@ -980,6 +985,10 @@ component-emitter@1.2.1, component-emitter@^1.2.0:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
 
+component-emitter@~1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.3.0.tgz#16e4070fba8ae29b679f2215853ee181ab2eabc0"
+
 component-inherit@0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/component-inherit/-/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
@@ -1062,6 +1071,10 @@ cookie@0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
 
+cookie@~0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.1.tgz#afd713fe26ebd21ba95ceb61f9a8116e50a537d1"
+
 cookiejar@^2.0.6, cookiejar@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/cookiejar/-/cookiejar-2.1.1.tgz#41ad57b1b555951ec171412a81942b1e8200d34a"
@@ -1166,12 +1179,18 @@ debug@2.6.9, debug@^2.1.1, debug@^2.2.0, debug@^2.6.0, debug@^2.6.8, debug@^2.6.
   dependencies:
     ms "2.0.0"
 
-debug@^3.1.0:
+debug@^3.1.0, debug@~3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
   dependencies:
     ms "2.0.0"
 
+debug@~4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  dependencies:
+    ms "^2.1.1"
+
 decamelize-keys@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/decamelize-keys/-/decamelize-keys-1.1.0.tgz#d171a87933252807eb3cb61dc1c1445d078df2d9"
@@ -1322,6 +1341,22 @@ engine.io-client@~1.8.4:
     xmlhttprequest-ssl "1.5.3"
     yeast "0.1.2"
 
+engine.io-client@~3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-3.5.0.tgz#fc1b4d9616288ce4f2daf06dcf612413dec941c7"
+  dependencies:
+    component-emitter "~1.3.0"
+    component-inherit "0.0.3"
+    debug "~3.1.0"
+    engine.io-parser "~2.2.0"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    parseqs "0.0.6"
+    parseuri "0.0.6"
+    ws "~7.4.2"
+    xmlhttprequest-ssl "~1.5.4"
+    yeast "0.1.2"
+
 engine.io-parser@1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/engine.io-parser/-/engine.io-parser-1.3.2.tgz#937b079f0007d0893ec56d46cb220b8cb435220a"
@@ -1333,16 +1368,26 @@ engine.io-parser@1.3.2:
     has-binary "0.1.7"
     wtf-8 "1.0.0"
 
-engine.io@~1.8.4:
-  version "1.8.4"
-  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-1.8.4.tgz#77bce12b80e5d60429337fec3b0daf691ebc9003"
+engine.io-parser@~2.2.0:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/engine.io-parser/-/engine.io-parser-2.2.1.tgz#57ce5611d9370ee94f99641b589f94c97e4f5da7"
   dependencies:
-    accepts "1.3.3"
-    base64id "1.0.0"
-    cookie "0.3.1"
-    debug "2.3.3"
-    engine.io-parser "1.3.2"
-    ws "1.1.4"
+    after "0.8.2"
+    arraybuffer.slice "~0.0.7"
+    base64-arraybuffer "0.1.4"
+    blob "0.0.5"
+    has-binary2 "~1.0.2"
+
+engine.io@~3.5.0:
+  version "3.5.0"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-3.5.0.tgz#9d6b985c8a39b1fe87cd91eb014de0552259821b"
+  dependencies:
+    accepts "~1.3.4"
+    base64id "2.0.0"
+    cookie "~0.4.1"
+    debug "~4.1.0"
+    engine.io-parser "~2.2.0"
+    ws "~7.4.2"
 
 error-ex@^1.2.0, error-ex@^1.3.1:
   version "1.3.1"
@@ -1946,6 +1991,12 @@ has-ansi@^2.0.0:
   dependencies:
     ansi-regex "^2.0.0"
 
+has-binary2@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has-binary2/-/has-binary2-1.0.3.tgz#7776ac627f3ea77250cfc332dab7ddf5e4f5d11d"
+  dependencies:
+    isarray "2.0.1"
+
 has-binary@0.1.7:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/has-binary/-/has-binary-0.1.7.tgz#68e61eb16210c9545a0a5cce06a873912fe1e68c"
@@ -2307,6 +2358,10 @@ isarray@1.0.0, isarray@^1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
 
+isarray@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-2.0.1.tgz#a37d94ed9cda2d59865c9f76fe596ee1f338741e"
+
 isexe@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
@@ -2813,7 +2868,7 @@ mime-db@~1.30.0:
   version "1.30.0"
   resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.30.0.tgz#74c643da2dd9d6a45399963465b26d5ca7d71f01"
 
-mime-types@^2.1.10, mime-types@^2.1.12, mime-types@~2.1.11, mime-types@~2.1.15, mime-types@~2.1.16, mime-types@~2.1.7:
+mime-types@^2.1.10, mime-types@^2.1.12, mime-types@~2.1.15, mime-types@~2.1.16, mime-types@~2.1.7:
   version "2.1.17"
   resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.17.tgz#09d7a393f03e995a79f8af857b70a9e0ab16557a"
   dependencies:
@@ -2912,6 +2967,10 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@^2.1.1:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
+
 msgpack-lite@0.1.26:
   version "0.1.26"
   resolved "https://registry.yarnpkg.com/msgpack-lite/-/msgpack-lite-0.1.26.tgz#dd3c50b26f059f25e7edee3644418358e2a9ad89"
@@ -3062,10 +3121,6 @@ oauth-sign@~0.8.1:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
 
-object-assign@4.1.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.0.tgz#7a3b3d0e98063d43f4c03f2e8ae6cd51a86883a0"
-
 object-assign@^4.0.1, object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
@@ -3202,12 +3257,20 @@ parseqs@0.0.5:
   dependencies:
     better-assert "~1.0.0"
 
+parseqs@0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.6.tgz#8e4bb5a19d1cdc844a08ac974d34e273afa670d5"
+
 parseuri@0.0.5:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.5.tgz#80204a50d4dbb779bfdc6ebe2778d90e4bce320a"
   dependencies:
     better-assert "~1.0.0"
 
+parseuri@0.0.6:
+  version "0.0.6"
+  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.6.tgz#e1496e829e3ac2ff47f39a4dd044b32823c4a25a"
+
 parseurl@~1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
@@ -3885,7 +3948,27 @@ socket.io-adapter@0.5.0:
     debug "2.3.3"
     socket.io-parser "2.3.1"
 
-socket.io-client@1.7.4, socket.io-client@^1.7.2:
+socket.io-adapter@~1.1.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-1.1.2.tgz#ab3f0d6f66b8fc7fca3959ab5991f82221789be9"
+
+socket.io-client@2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.4.0.tgz#aafb5d594a3c55a34355562fc8aea22ed9119a35"
+  dependencies:
+    backo2 "1.0.2"
+    component-bind "1.0.0"
+    component-emitter "~1.3.0"
+    debug "~3.1.0"
+    engine.io-client "~3.5.0"
+    has-binary2 "~1.0.2"
+    indexof "0.0.1"
+    parseqs "0.0.6"
+    parseuri "0.0.6"
+    socket.io-parser "~3.3.0"
+    to-array "0.1.4"
+
+socket.io-client@^1.7.2:
   version "1.7.4"
   resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-1.7.4.tgz#ec9f820356ed99ef6d357f0756d648717bdd4281"
   dependencies:
@@ -3914,6 +3997,22 @@ socket.io-parser@2.3.1:
     isarray "0.0.1"
     json3 "3.3.2"
 
+socket.io-parser@~3.3.0:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-3.3.2.tgz#ef872009d0adcf704f2fbe830191a14752ad50b6"
+  dependencies:
+    component-emitter "~1.3.0"
+    debug "~3.1.0"
+    isarray "2.0.1"
+
+socket.io-parser@~3.4.0:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-3.4.1.tgz#b06af838302975837eab2dc980037da24054d64a"
+  dependencies:
+    component-emitter "1.2.1"
+    debug "~4.1.0"
+    isarray "2.0.1"
+
 socket.io-redis@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/socket.io-redis/-/socket.io-redis-3.1.0.tgz#dfeaeedcf2c829f99ca999a1aea162fdeae1a97c"
@@ -3925,17 +4024,16 @@ socket.io-redis@^3.1.0:
     socket.io-adapter "0.5.0"
     uid2 "0.0.3"
 
-socket.io@^1.7.2:
-  version "1.7.4"
-  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-1.7.4.tgz#2f7ecedc3391bf2d5c73e291fe233e6e34d4dd00"
+socket.io@^2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.4.0.tgz#01030a2727bd8eb2e85ea96d69f03692ee53d47e"
   dependencies:
-    debug "2.3.3"
-    engine.io "~1.8.4"
-    has-binary "0.1.7"
-    object-assign "4.1.0"
-    socket.io-adapter "0.5.0"
-    socket.io-client "1.7.4"
-    socket.io-parser "2.3.1"
+    debug "~4.1.0"
+    engine.io "~3.5.0"
+    has-binary2 "~1.0.2"
+    socket.io-adapter "~1.1.0"
+    socket.io-client "2.4.0"
+    socket.io-parser "~3.4.0"
 
 source-map-support@^0.4.15:
   version "0.4.18"
@@ -4633,12 +4731,9 @@ ws@1.1.2:
     options ">=0.0.5"
     ultron "1.0.x"
 
-ws@1.1.4:
-  version "1.1.4"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-1.1.4.tgz#57f40d036832e5f5055662a397c4de76ed66bf61"
-  dependencies:
-    options ">=0.0.5"
-    ultron "1.0.x"
+ws@~7.4.2:
+  version "7.4.2"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.2.tgz#782100048e54eb36fe9843363ab1c68672b261dd"
 
 wtf-8@1.0.0:
   version "1.0.0"
@@ -4652,6 +4747,10 @@ xmlhttprequest-ssl@1.5.3:
   version "1.5.3"
   resolved "https://registry.yarnpkg.com/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.3.tgz#185a888c04eca46c3e4070d99f7b49de3528992d"
 
+xmlhttprequest-ssl@~1.5.4:
+  version "1.5.5"
+  resolved "https://registry.yarnpkg.com/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz#c2876b06168aadc40e57d97e81191ac8f4398b3e"
+
 xtend@^4.0.0, xtend@^4.0.1, xtend@~4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"