diff --git a/package.json b/package.json
index b862827..a1272c9 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "passport": "^0.4.0",
     "passport-jwt": "^4.0.0",
     "passport-local": "^1.0.0",
-    "sequelize": "^4.41.2",
+    "sequelize": "^5.15.1",
     "sequelize-cli": "^5.5.1",
     "universal-cookie": "^4.0.2"
   }
diff --git a/yarn.lock b/yarn.lock
index f45974b..0d5e1e8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7,11 +7,6 @@
   resolved "https://registry.yarnpkg.com/@types/cookie/-/cookie-0.3.3.tgz#85bc74ba782fb7aa3a514d11767832b0e3bc6803"
   integrity sha512-LKVP3cgXBT9RYj+t+9FDKwS5tdI+rPBXaNSkma7hvqy35lc7mAokC2zsqWJH0LaqIt3B962nuYI77hsJoT1gow==
 
-"@types/geojson@^1.0.0":
-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/@types/geojson/-/geojson-1.0.6.tgz#3e02972728c69248c2af08d60a48cbb8680fffdf"
-  integrity sha512-Xqg/lIZMrUd0VRmSRbCAewtwGZiAk3mEUDvV4op1tGl+LvyPcb/MIOSxTl9z+9+J+R4/vpjiCAT4xeKzH9ji1w==
-
 "@types/node@*":
   version "12.7.5"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.7.5.tgz#e19436e7f8e9b4601005d73673b6dc4784ffcc2f"
@@ -64,6 +59,11 @@ ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   dependencies:
     color-convert "^1.9.0"
 
+any-promise@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
+  integrity sha1-q8av7tzqUugJzcA3au0845Y10X8=
+
 anymatch@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-2.0.0.tgz#bcb24b4f37934d9aa7ac17b4adaf89e7c76ef2eb"
@@ -188,7 +188,7 @@ binary-extensions@^1.0.0:
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-1.13.1.tgz#598afe54755b2868a5330d2aff9d4ebb53209b65"
   integrity sha512-Un7MIEDdUC5gNpcGDV97op1Ywk748MpHcFTHoYs6qnj1Z3j7I53VG3nwZhKzoBZmbdRNnb6WRdFlwl7tSDuZGw==
 
-bluebird@^3.4.6, bluebird@^3.5.0, bluebird@^3.5.3:
+bluebird@^3.5.0, bluebird@^3.5.3:
   version "3.5.5"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.5.tgz#a8d0afd73251effbbd5fe384a77d73003c17a71f"
   integrity sha512-5am6HnnfN+urzt4yfg7IgTbotDjIT/u8AJpEt0sIU9FtXfVeezXAPKswrG+xKUCOYAINpSdgZVDU6QFh+cuH3w==
@@ -552,7 +552,7 @@ date-fns@^1.30.1:
   resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-1.30.1.tgz#2e71bf0b119153dbb4cc4e88d9ea5acfb50dc05c"
   integrity sha512-hBSVCvSmWC+QypYObzwGOd9wqdDpOt+0wl0KbU+R+uuZBS1jN8VsD1ss3irQDknRj5NvxiTF6oj/nDRnN/UQNw==
 
-debug@2.6.9, debug@^2.2.0, debug@^2.3.3, debug@^2.6.9:
+debug@2.6.9, debug@^2.2.0, debug@^2.3.3:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
   integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
@@ -573,6 +573,13 @@ debug@^3.1.0, debug@^3.2.6:
   dependencies:
     ms "^2.1.1"
 
+debug@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  integrity sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==
+  dependencies:
+    ms "^2.1.1"
+
 decamelize@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -620,7 +627,7 @@ denque@^1.4.1:
   resolved "https://registry.yarnpkg.com/denque/-/denque-1.4.1.tgz#6744ff7641c148c3f8a69c307e51235c1f4a37cf"
   integrity sha512-OfzPuSZKGcgr96rf1oODnfjqBFmr1DVoc/TrItj3Ohe0Ah1C5WX5Baquw/9U9KovnQ88EqmJbD66rKYUQYN1tQ==
 
-depd@^1.1.0, depd@~1.1.2:
+depd@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.2.tgz#9bcd52e14c097763e749b274c4346ed2e560b5a9"
   integrity sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=
@@ -1003,11 +1010,6 @@ generate-function@^2.3.1:
   dependencies:
     is-property "^1.0.2"
 
-generic-pool@3.5.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/generic-pool/-/generic-pool-3.5.0.tgz#acac4fd743a175ff20574f380910036464cb61f7"
-  integrity sha512-dEkxmX+egB2o4NR80c/q+xzLLzLX+k68/K8xv81XprD+Sk7ZtP14VugeCz+fUwv5FzpWq40pPtAkzPRqT8ka9w==
-
 get-caller-file@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.3.tgz#f978fa4c90d1dfe7ff2d6beda2a515e713bdcf4a"
@@ -1589,10 +1591,10 @@ lodash.once@^4.0.0:
   resolved "https://registry.yarnpkg.com/lodash.once/-/lodash.once-4.1.1.tgz#0dd3971213c7c56df880977d504c88fb471a97ac"
   integrity sha1-DdOXEhPHxW34gJd9UEyI+0cal6w=
 
-lodash@^4.17.1, lodash@^4.17.15, lodash@^4.17.5:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+lodash@^4.17.11, lodash@^4.17.15, lodash@^4.17.5:
+  version "4.17.20"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
+  integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
 
 long@^4.0.0:
   version "4.0.0"
@@ -1783,17 +1785,17 @@ mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.1:
   dependencies:
     minimist "0.0.8"
 
-moment-timezone@^0.5.14:
-  version "0.5.26"
-  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.26.tgz#c0267ca09ae84631aa3dc33f65bedbe6e8e0d772"
-  integrity sha512-sFP4cgEKTCymBBKgoxZjYzlSovC20Y6J7y3nanDc5RoBIXKlZhoYwBoZGe3flwU6A372AcRwScH8KiwV6zjy1g==
+moment-timezone@^0.5.21:
+  version "0.5.31"
+  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.31.tgz#9c40d8c5026f0c7ab46eda3d63e49c155148de05"
+  integrity sha512-+GgHNg8xRhMXfEbv81iDtrVeTcWt0kWmTEY1XQK14dICTXnWJnT0dxdlPspwqF3keKMVPXwayEsk1DI0AA/jdA==
   dependencies:
     moment ">= 2.9.0"
 
-"moment@>= 2.9.0", moment@^2.20.0:
-  version "2.24.0"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.24.0.tgz#0d055d53f5052aa653c9f6eb68bb5d12bf5c2b5b"
-  integrity sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg==
+"moment@>= 2.9.0", moment@^2.24.0:
+  version "2.27.0"
+  resolved "https://registry.yarnpkg.com/moment/-/moment-2.27.0.tgz#8bff4e3e26a236220dfe3e36de756b6ebaa0105d"
+  integrity sha512-al0MUK7cpIcglMv3YF13qSgdAIqxHTO7brRtaz3DlSULbqfazqkc5kEjNrLDOM7fsjshoFIihnU8snrP7zUvhQ==
 
 morgan@^1.9.1:
   version "1.9.1"
@@ -2418,13 +2420,12 @@ ret@~0.1.10:
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
   integrity sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==
 
-retry-as-promised@^2.3.2:
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/retry-as-promised/-/retry-as-promised-2.3.2.tgz#cd974ee4fd9b5fe03cbf31871ee48221c07737b7"
-  integrity sha1-zZdO5P2bX+A8vzGHHuSCIcB3N7c=
+retry-as-promised@^3.1.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/retry-as-promised/-/retry-as-promised-3.2.0.tgz#769f63d536bec4783549db0777cb56dadd9d8543"
+  integrity sha512-CybGs60B7oYU/qSQ6kuaFmRd9sTZ6oXSc0toqePvV74Ac6/IFZSI1ReFQmtCN+uvW1Mtqdwpvt/LGOiCBAY2Mg==
   dependencies:
-    bluebird "^3.4.6"
-    debug "^2.6.9"
+    any-promise "^1.3.0"
 
 rimraf@^2.6.1:
   version "2.7.1"
@@ -2479,6 +2480,11 @@ semver-diff@^2.0.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
   integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
 
+semver@^6.1.1:
+  version "6.3.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
+  integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
+
 send@0.17.1:
   version "0.17.1"
   resolved "https://registry.yarnpkg.com/send/-/send-0.17.1.tgz#c1d8b059f7900f7466dd4938bdc44e11ddb376c8"
@@ -2517,28 +2523,31 @@ sequelize-cli@^5.5.1:
     umzug "^2.1.0"
     yargs "^13.1.0"
 
-sequelize@^4.41.2:
-  version "4.44.3"
-  resolved "https://registry.yarnpkg.com/sequelize/-/sequelize-4.44.3.tgz#29d7af9efdfad4c796a75764e91f701fc454cee0"
-  integrity sha512-r2A4EVDKRCcABcZhY4ItvbcosvMJKpQMooxg/S8ouRFrZzqMPQ9O2thOUfgW59q8ZcEa5ccNeqwg15MCciqPMg==
+sequelize-pool@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/sequelize-pool/-/sequelize-pool-2.3.0.tgz#64f1fe8744228172c474f530604b6133be64993d"
+  integrity sha512-Ibz08vnXvkZ8LJTiUOxRcj1Ckdn7qafNZ2t59jYHMX1VIebTAOYefWdRYFt6z6+hy52WGthAHAoLc9hvk3onqA==
+
+sequelize@^5.15.1:
+  version "5.15.1"
+  resolved "https://registry.yarnpkg.com/sequelize/-/sequelize-5.15.1.tgz#f130ded17e74395ae7f5e265277c99577e895afb"
+  integrity sha512-DCzzJYvJLMKnyf8G3at2A+yM9M2fSQmTmuOYIpCWM8Gjqx3XfgNTd1NkuyPWFoi1/d1AXQsN2VDPXkPczida8A==
   dependencies:
     bluebird "^3.5.0"
     cls-bluebird "^2.1.0"
-    debug "^3.1.0"
-    depd "^1.1.0"
+    debug "^4.1.1"
     dottie "^2.0.0"
-    generic-pool "3.5.0"
     inflection "1.12.0"
-    lodash "^4.17.1"
-    moment "^2.20.0"
-    moment-timezone "^0.5.14"
-    retry-as-promised "^2.3.2"
-    semver "^5.5.0"
-    terraformer-wkt-parser "^1.1.2"
+    lodash "^4.17.11"
+    moment "^2.24.0"
+    moment-timezone "^0.5.21"
+    retry-as-promised "^3.1.0"
+    semver "^6.1.1"
+    sequelize-pool "^2.3.0"
     toposort-class "^1.0.1"
     uuid "^3.2.1"
-    validator "^10.4.0"
-    wkx "^0.4.1"
+    validator "^10.11.0"
+    wkx "^0.4.6"
 
 serve-static@1.14.1:
   version "1.14.1"
@@ -2821,21 +2830,6 @@ term-size@^1.2.0:
   dependencies:
     execa "^0.7.0"
 
-terraformer-wkt-parser@^1.1.2:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/terraformer-wkt-parser/-/terraformer-wkt-parser-1.2.0.tgz#c9d6ac3dff25f4c0bd344e961f42694961834c34"
-  integrity sha512-QU3iA54St5lF8Za1jg1oj4NYc8sn5tCZ08aNSWDeGzrsaV48eZk1iAVWasxhNspYBoCqdHuoot1pUTUrE1AJ4w==
-  dependencies:
-    "@types/geojson" "^1.0.0"
-    terraformer "~1.0.5"
-
-terraformer@~1.0.5:
-  version "1.0.9"
-  resolved "https://registry.yarnpkg.com/terraformer/-/terraformer-1.0.9.tgz#77851fef4a49c90b345dc53cf26809fdf29dcda6"
-  integrity sha512-YlmQ1fsMWTkKGDGibCRWgmLzrpDRUr63Q025LJ/taYQ6j1Yb8q9McKF7NBi6ACAyUXO6F/bl9w6v4MY307y5Ag==
-  optionalDependencies:
-    "@types/geojson" "^1.0.0"
-
 through@2, through@~2.3, through@~2.3.1:
   version "2.3.8"
   resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
@@ -3045,7 +3039,7 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "^3.0.0"
     spdx-expression-parse "^3.0.0"
 
-validator@^10.4.0:
+validator@^10.11.0:
   version "10.11.0"
   resolved "https://registry.yarnpkg.com/validator/-/validator-10.11.0.tgz#003108ea6e9a9874d31ccc9e5006856ccd76b228"
   integrity sha512-X/p3UZerAIsbBfN/IwahhYaBbY68EN/UQBWHtsbXGT5bfrH/p4NQzUCG1kF/rtKaNpnJ7jAu6NGTdSNtyNIXMw==
@@ -3081,7 +3075,7 @@ widest-line@^2.0.0:
   dependencies:
     string-width "^2.1.1"
 
-wkx@^0.4.1:
+wkx@^0.4.6:
   version "0.4.8"
   resolved "https://registry.yarnpkg.com/wkx/-/wkx-0.4.8.tgz#a092cf088d112683fdc7182fd31493b2c5820003"
   integrity sha512-ikPXMM9IR/gy/LwiOSqWlSL3X/J5uk9EO2hHNRXS41eTLXaUFEVw9fn/593jW/tE5tedNg8YjT5HkCa4FqQZyQ==