diff --git a/slack-events-api-message-handler/package-lock.json b/slack-events-api-message-handler/package-lock.json
index fc5d23d..3a8bb74 100644
--- a/slack-events-api-message-handler/package-lock.json
+++ b/slack-events-api-message-handler/package-lock.json
@@ -4,15 +4,10 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "@types/geojson": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/@types/geojson/-/geojson-1.0.4.tgz",
-      "integrity": "sha512-idP+xKlqFG1egc5M52mDat/Z0VMrwY93LCd81dzW/IjeTIYTMWuzVu+fBf19QK/mX9K7jM2UNN5nzDRgM950GA=="
-    },
     "@types/node": {
-      "version": "8.0.31",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-8.0.31.tgz",
-      "integrity": "sha512-R+LdMJHJQwRd/Ca0Nr5KnwbSWHxTD3DWz4ivqoPeNH+YPcuirMWK+Ti9Mx32jOecmPhHOCd+6CefU5e1eVq2Ew=="
+      "version": "12.12.5",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.12.5.tgz",
+      "integrity": "sha512-KEjODidV4XYUlJBF3XdjSH5FWoMCtO0utnhtdLf1AgeuZLOrRbvmU/gaRCVg7ZaQDjVf3l84egiY0mRNe5xE4A=="
     },
     "agent-base": {
       "version": "2.1.1",
@@ -30,6 +25,22 @@
         }
       }
     },
+    "ajv": {
+      "version": "6.10.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",
+      "integrity": "sha512-TXtUUEYHuaTEbLZWIKUr5pmBuhDLy+8KYtPYdcV8qC+pOZL+NKqYwvWSRrVXHn+ZmRRAu8vJTAznH7Oag6RVRw==",
+      "requires": {
+        "fast-deep-equal": "^2.0.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
+      }
+    },
+    "any-promise": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
+      "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8="
+    },
     "archiver": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/archiver/-/archiver-2.0.3.tgz",
@@ -59,6 +70,19 @@
         "readable-stream": "2.3.3"
       }
     },
+    "asn1": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
+      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+      "requires": {
+        "safer-buffer": "~2.1.0"
+      }
+    },
+    "assert-plus": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
+    },
     "ast-types": {
       "version": "0.9.13",
       "resolved": "https://registry.npmjs.org/ast-types/-/ast-types-0.9.13.tgz",
@@ -72,6 +96,11 @@
         "lodash": "4.17.4"
       }
     },
+    "asynckit": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
+    },
     "aws-sdk": {
       "version": "2.125.0",
       "resolved": "https://registry.npmjs.org/aws-sdk/-/aws-sdk-2.125.0.tgz",
@@ -96,6 +125,16 @@
         }
       }
     },
+    "aws-sign2": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg="
+    },
+    "aws4": {
+      "version": "1.8.0",
+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
+      "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ=="
+    },
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
@@ -106,6 +145,14 @@
       "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.2.1.tgz",
       "integrity": "sha512-dwVUVIXsBZXwTuwnXI9RK8sBmgq09NDHzyR9SAph9eqk76gKK2JSQmZARC2zRC81JC2QTtxD0ARU5qTS25gIGw=="
     },
+    "bcrypt-pbkdf": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
+      "requires": {
+        "tweetnacl": "^0.14.3"
+      }
+    },
     "bl": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.1.tgz",
@@ -115,9 +162,9 @@
       }
     },
     "bluebird": {
-      "version": "3.5.0",
-      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.0.tgz",
-      "integrity": "sha1-eRQg1/VR7qKJdFOop3ZT+WYG1nw="
+      "version": "3.7.1",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.1.tgz",
+      "integrity": "sha512-DdmyoGCleJnkbp3nkbxTLJ18rjDsE4yCggEwKNXkeV123sPNfOCYeDoeuOY+F2FrSjO1YXcTU+dsy96KMy+gcg=="
     },
     "brace-expansion": {
       "version": "1.1.8",
@@ -161,6 +208,11 @@
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
       "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
     },
+    "caseless": {
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
+      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
+    },
     "chownr": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.0.1.tgz",
@@ -192,12 +244,12 @@
       }
     },
     "cls-bluebird": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/cls-bluebird/-/cls-bluebird-2.0.1.tgz",
-      "integrity": "sha1-wlmkgK4CwOUGE0MHuxPbMERu4uc=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/cls-bluebird/-/cls-bluebird-2.1.0.tgz",
+      "integrity": "sha1-N+8eCAqP+1XC9BZPU28ZGeeWiu4=",
       "requires": {
-        "is-bluebird": "1.0.2",
-        "shimmer": "1.1.0"
+        "is-bluebird": "^1.0.2",
+        "shimmer": "^1.1.0"
       }
     },
     "co": {
@@ -205,6 +257,14 @@
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
       "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
     },
+    "combined-stream": {
+      "version": "1.0.8",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+      "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
+      "requires": {
+        "delayed-stream": "~1.0.0"
+      }
+    },
     "compress-commons": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/compress-commons/-/compress-commons-1.2.0.tgz",
@@ -245,17 +305,32 @@
       "resolved": "https://registry.npmjs.org/crypto-browserify/-/crypto-browserify-1.0.9.tgz",
       "integrity": "sha1-zFRJaF37hesRyYKKzHy4erW7/MA="
     },
+    "dashdash": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
+      "integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
+      "requires": {
+        "assert-plus": "^1.0.0"
+      }
+    },
     "data-uri-to-buffer": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/data-uri-to-buffer/-/data-uri-to-buffer-1.2.0.tgz",
       "integrity": "sha512-vKQ9DTQPN1FLYiiEEOQ6IBGFqvjCa5rSK3cWMy/Nespm5d/x3dGFT9UBZnkLxCwua/IXBi2TYnwTEpsOvhC4UQ=="
     },
     "debug": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
-      "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
+      "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
       "requires": {
-        "ms": "2.0.0"
+        "ms": "^2.1.1"
+      },
+      "dependencies": {
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+        }
       }
     },
     "deep-is": {
@@ -273,15 +348,20 @@
         "esprima": "3.1.3"
       }
     },
+    "delayed-stream": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
+    },
     "depd": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.1.tgz",
       "integrity": "sha1-V4O04cRZ8G+lyif5kfPQbnoxA1k="
     },
     "dottie": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/dottie/-/dottie-2.0.0.tgz",
-      "integrity": "sha1-2hkZgci41xPKARXViYzzl8Lw3dA="
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/dottie/-/dottie-2.0.1.tgz",
+      "integrity": "sha512-ch5OQgvGDK2u8pSZeSYAQaV/lczImd7pMJ7BcEPXmnFVjy4yJIzP6CsODJUTH8mg1tyH1Z2abOiuJO3DjZ/GBw=="
     },
     "duplexify": {
       "version": "3.5.1",
@@ -294,6 +374,15 @@
         "stream-shift": "1.0.0"
       }
     },
+    "ecc-jsbn": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
+      "integrity": "sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=",
+      "requires": {
+        "jsbn": "~0.1.0",
+        "safer-buffer": "^2.1.0"
+      }
+    },
     "end-of-stream": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.0.tgz",
@@ -352,6 +441,21 @@
       "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.1.tgz",
       "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ="
     },
+    "extsprintf": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
+      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU="
+    },
+    "fast-deep-equal": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
+      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk="
+    },
+    "fast-json-stable-stringify": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
+      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I="
+    },
     "fast-levenshtein": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
@@ -362,6 +466,21 @@
       "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
       "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw=="
     },
+    "forever-agent": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/forever-agent/-/forever-agent-0.6.1.tgz",
+      "integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE="
+    },
+    "form-data": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.3.tgz",
+      "integrity": "sha512-1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==",
+      "requires": {
+        "asynckit": "^0.4.0",
+        "combined-stream": "^1.0.6",
+        "mime-types": "^2.1.12"
+      }
+    },
     "fs.realpath": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
@@ -399,11 +518,6 @@
         }
       }
     },
-    "generic-pool": {
-      "version": "3.1.8",
-      "resolved": "https://registry.npmjs.org/generic-pool/-/generic-pool-3.1.8.tgz",
-      "integrity": "sha1-CYRLZUW8kXfsIYvTXUrYlMZb4nE="
-    },
     "get-uri": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/get-uri/-/get-uri-2.0.1.tgz",
@@ -427,6 +541,14 @@
         }
       }
     },
+    "getpass": {
+      "version": "0.1.7",
+      "resolved": "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz",
+      "integrity": "sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=",
+      "requires": {
+        "assert-plus": "^1.0.0"
+      }
+    },
     "glob": {
       "version": "7.1.2",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
@@ -458,6 +580,20 @@
         "through2": "2.0.3"
       }
     },
+    "har-schema": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz",
+      "integrity": "sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI="
+    },
+    "har-validator": {
+      "version": "5.1.3",
+      "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.1.3.tgz",
+      "integrity": "sha512-sNvOCzEQNr/qrvJgc3UG/kD4QtlHycrzwS+6mfTrrSq97BvaYcPZZI1ZSqGSPR73Cxn4LKTD4PttRwfU7jWq5g==",
+      "requires": {
+        "ajv": "^6.5.5",
+        "har-schema": "^2.0.0"
+      }
+    },
     "http-errors": {
       "version": "1.6.2",
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.6.2.tgz",
@@ -489,6 +625,16 @@
         }
       }
     },
+    "http-signature": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz",
+      "integrity": "sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=",
+      "requires": {
+        "assert-plus": "^1.0.0",
+        "jsprim": "^1.2.2",
+        "sshpk": "^1.7.0"
+      }
+    },
     "https-proxy-agent": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-1.0.0.tgz",
@@ -558,11 +704,21 @@
       "resolved": "https://registry.npmjs.org/is-gzip/-/is-gzip-1.0.0.tgz",
       "integrity": "sha1-bKiwe5nHeZgCWQDlVc7Y7YCHmoM="
     },
+    "is-typedarray": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
+      "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo="
+    },
     "isarray": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
       "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
     },
+    "isstream": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
+      "integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo="
+    },
     "jmespath": {
       "version": "0.15.0",
       "resolved": "https://registry.npmjs.org/jmespath/-/jmespath-0.15.0.tgz",
@@ -573,6 +729,37 @@
       "resolved": "https://registry.npmjs.org/js-string-escape/-/js-string-escape-1.0.1.tgz",
       "integrity": "sha1-4mJbrbwNZ8dTPp7cEGjFh65BN+8="
     },
+    "jsbn": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
+      "integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM="
+    },
+    "json-schema": {
+      "version": "0.2.3",
+      "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
+      "integrity": "sha1-tIDIkuWaLwWVTOcnvT8qTogvnhM="
+    },
+    "json-schema-traverse": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
+      "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="
+    },
+    "json-stringify-safe": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz",
+      "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
+    },
+    "jsprim": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.1.tgz",
+      "integrity": "sha1-MT5mvB5cwG5Di8G3SZwuXFastqI=",
+      "requires": {
+        "assert-plus": "1.0.0",
+        "extsprintf": "1.3.0",
+        "json-schema": "0.2.3",
+        "verror": "1.10.0"
+      }
+    },
     "lazystream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/lazystream/-/lazystream-1.0.0.tgz",
@@ -600,6 +787,19 @@
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.6.5.tgz",
       "integrity": "sha1-5W1jVBSO3o13B7WNFDIg/QjfD9U="
     },
+    "mime-db": {
+      "version": "1.40.0",
+      "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.40.0.tgz",
+      "integrity": "sha512-jYdeOMPy9vnxEqFRRo6ZvTZ8d9oPb+k18PKoYNYUe2stVEBPPwsln/qWzdbmaIvnhZ9v2P+CuecK+fpUfsV2mA=="
+    },
+    "mime-types": {
+      "version": "2.1.24",
+      "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.24.tgz",
+      "integrity": "sha512-WaFHS3MCl5fapm3oLxU4eYDw77IQM2ACcxQ9RIxfaC3ooc6PFuBMGZZsYpvoXS5D5QTWPieo1jjLdAm3TBP3cQ==",
+      "requires": {
+        "mime-db": "1.40.0"
+      }
+    },
     "minimal-request-promise": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/minimal-request-promise/-/minimal-request-promise-1.4.0.tgz",
@@ -634,16 +834,16 @@
       }
     },
     "moment": {
-      "version": "2.18.1",
-      "resolved": "https://registry.npmjs.org/moment/-/moment-2.18.1.tgz",
-      "integrity": "sha1-w2GT3Tzhwu7SrbfIAtu8d6gbHA8="
+      "version": "2.24.0",
+      "resolved": "https://registry.npmjs.org/moment/-/moment-2.24.0.tgz",
+      "integrity": "sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg=="
     },
     "moment-timezone": {
-      "version": "0.5.13",
-      "resolved": "https://registry.npmjs.org/moment-timezone/-/moment-timezone-0.5.13.tgz",
-      "integrity": "sha1-mc5cfYJyYusPH3AgRBd/YHRde5A=",
+      "version": "0.5.27",
+      "resolved": "https://registry.npmjs.org/moment-timezone/-/moment-timezone-0.5.27.tgz",
+      "integrity": "sha512-EIKQs7h5sAsjhPCqN6ggx6cEbs94GK050254TIJySD1bzoM5JTYDwAU1IoVOeTOL6Gm27kYJ51/uuvq1kIlrbw==",
       "requires": {
-        "moment": "2.18.1"
+        "moment": ">= 2.9.0"
       }
     },
     "ms": {
@@ -664,6 +864,11 @@
         "remove-trailing-separator": "1.1.0"
       }
     },
+    "oauth-sign": {
+      "version": "0.9.0",
+      "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.9.0.tgz",
+      "integrity": "sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ=="
+    },
     "object-assign": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.0.tgz",
@@ -775,6 +980,11 @@
         "through2": "2.0.3"
       }
     },
+    "performance-now": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
+      "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
+    },
     "pg": {
       "version": "6.4.2",
       "resolved": "https://registry.npmjs.org/pg/-/pg-6.4.2.tgz",
@@ -895,6 +1105,11 @@
         }
       }
     },
+    "psl": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/psl/-/psl-1.4.0.tgz",
+      "integrity": "sha512-HZzqCGPecFLyoRj5HLfuDSKYTJkAfB5thKBIkRHtGjWwY7p1dAyveIbXIq4tO0KYfDF2tHqPUgY9SDnGm00uFw=="
+    },
     "pump": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/pump/-/pump-1.0.2.tgz",
@@ -919,6 +1134,11 @@
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.3.2.tgz",
       "integrity": "sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0="
     },
+    "qs": {
+      "version": "6.5.2",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
+      "integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA=="
+    },
     "querystring": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
@@ -954,64 +1174,107 @@
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
       "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8="
     },
-    "retry-as-promised": {
-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/retry-as-promised/-/retry-as-promised-2.3.1.tgz",
-      "integrity": "sha1-91BZGD+XMHccCbrR7tV1N5McvJ0=",
-      "requires": {
-        "bluebird": "3.5.0",
-        "debug": "2.6.9"
+    "request": {
+      "version": "2.88.0",
+      "resolved": "https://registry.npmjs.org/request/-/request-2.88.0.tgz",
+      "integrity": "sha512-NAqBSrijGLZdM0WZNsInLJpkJokL72XYjUpnB0iwsRgxh7dB6COrHnTBNwN0E+lHDAJzu7kLAkDeY08z2/A0hg==",
+      "requires": {
+        "aws-sign2": "~0.7.0",
+        "aws4": "^1.8.0",
+        "caseless": "~0.12.0",
+        "combined-stream": "~1.0.6",
+        "extend": "~3.0.2",
+        "forever-agent": "~0.6.1",
+        "form-data": "~2.3.2",
+        "har-validator": "~5.1.0",
+        "http-signature": "~1.2.0",
+        "is-typedarray": "~1.0.0",
+        "isstream": "~0.1.2",
+        "json-stringify-safe": "~5.0.1",
+        "mime-types": "~2.1.19",
+        "oauth-sign": "~0.9.0",
+        "performance-now": "^2.1.0",
+        "qs": "~6.5.2",
+        "safe-buffer": "^5.1.2",
+        "tough-cookie": "~2.4.3",
+        "tunnel-agent": "^0.6.0",
+        "uuid": "^3.3.2"
       },
       "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "requires": {
-            "ms": "2.0.0"
-          }
+        "extend": {
+          "version": "3.0.2",
+          "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+          "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g=="
+        },
+        "safe-buffer": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
+          "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
         }
       }
     },
+    "retry-as-promised": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/retry-as-promised/-/retry-as-promised-3.2.0.tgz",
+      "integrity": "sha512-CybGs60B7oYU/qSQ6kuaFmRd9sTZ6oXSc0toqePvV74Ac6/IFZSI1ReFQmtCN+uvW1Mtqdwpvt/LGOiCBAY2Mg==",
+      "requires": {
+        "any-promise": "^1.3.0"
+      }
+    },
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
       "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
     },
+    "safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+    },
     "sax": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.1.tgz",
       "integrity": "sha1-e45lYZCyKOgaZq6nSEgNgozS03o="
     },
     "semver": {
-      "version": "5.4.1",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
-      "integrity": "sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg=="
+      "version": "6.3.0",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
+      "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw=="
     },
     "sequelize": {
-      "version": "4.13.2",
-      "resolved": "https://registry.npmjs.org/sequelize/-/sequelize-4.13.2.tgz",
-      "integrity": "sha512-YvPw5cot4ETuf4ddaF2yDykN0dHHQUQvRGi2myjZZLyXpiT4IsrEAabAMIzfs4NxbG+AQh9sFf3PrAMXuQjthw==",
-      "requires": {
-        "bluebird": "3.5.0",
-        "cls-bluebird": "2.0.1",
-        "debug": "3.1.0",
-        "depd": "1.1.1",
-        "dottie": "2.0.0",
-        "generic-pool": "3.1.8",
+      "version": "5.15.1",
+      "resolved": "https://registry.npmjs.org/sequelize/-/sequelize-5.15.1.tgz",
+      "integrity": "sha512-DCzzJYvJLMKnyf8G3at2A+yM9M2fSQmTmuOYIpCWM8Gjqx3XfgNTd1NkuyPWFoi1/d1AXQsN2VDPXkPczida8A==",
+      "requires": {
+        "bluebird": "^3.5.0",
+        "cls-bluebird": "^2.1.0",
+        "debug": "^4.1.1",
+        "dottie": "^2.0.0",
         "inflection": "1.12.0",
-        "lodash": "4.17.4",
-        "moment": "2.18.1",
-        "moment-timezone": "0.5.13",
-        "retry-as-promised": "2.3.1",
-        "semver": "5.4.1",
-        "terraformer-wkt-parser": "1.1.2",
-        "toposort-class": "1.0.1",
-        "uuid": "3.1.0",
-        "validator": "8.2.0",
-        "wkx": "0.4.2"
+        "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": "^10.11.0",
+        "wkx": "^0.4.6"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.15",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
+        }
       }
     },
+    "sequelize-pool": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/sequelize-pool/-/sequelize-pool-2.3.0.tgz",
+      "integrity": "sha512-Ibz08vnXvkZ8LJTiUOxRcj1Ckdn7qafNZ2t59jYHMX1VIebTAOYefWdRYFt6z6+hy52WGthAHAoLc9hvk3onqA=="
+    },
     "sequential-promise-map": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/sequential-promise-map/-/sequential-promise-map-1.0.4.tgz",
@@ -1028,9 +1291,9 @@
       "integrity": "sha1-xUmCuZbHbvDB5rWfvcWCX1txMRM="
     },
     "shimmer": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/shimmer/-/shimmer-1.1.0.tgz",
-      "integrity": "sha1-l9c3cTf/u6tCVSLkKf4KqJpIizU="
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/shimmer/-/shimmer-1.2.1.tgz",
+      "integrity": "sha512-sQTKC1Re/rM6XyFM6fIAGHRPVGvyXfgzIDvzoq608vM+jeyVD0Tu1E6Np0Kc2zAIFWIj963V2800iF/9LPieQw=="
     },
     "smart-buffer": {
       "version": "1.1.15",
@@ -1070,6 +1333,22 @@
         "through": "2.3.8"
       }
     },
+    "sshpk": {
+      "version": "1.16.1",
+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.16.1.tgz",
+      "integrity": "sha512-HXXqVUq7+pcKeLqqZj6mHFUMvXtOJt1uoUx09pFW6011inTMxqI8BA8PM95myrIyyKwdnzjdFjLiE6KBPVtJIg==",
+      "requires": {
+        "asn1": "~0.2.3",
+        "assert-plus": "^1.0.0",
+        "bcrypt-pbkdf": "^1.0.0",
+        "dashdash": "^1.12.0",
+        "ecc-jsbn": "~0.1.1",
+        "getpass": "^0.1.1",
+        "jsbn": "~0.1.0",
+        "safer-buffer": "^2.0.2",
+        "tweetnacl": "~0.14.0"
+      }
+    },
     "statuses": {
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.3.1.tgz",
@@ -1110,22 +1389,6 @@
         "xtend": "4.0.1"
       }
     },
-    "terraformer": {
-      "version": "1.0.8",
-      "resolved": "https://registry.npmjs.org/terraformer/-/terraformer-1.0.8.tgz",
-      "integrity": "sha1-UeCtiXRvzyFh3G9lqnDkI3fItZM=",
-      "requires": {
-        "@types/geojson": "1.0.4"
-      }
-    },
-    "terraformer-wkt-parser": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/terraformer-wkt-parser/-/terraformer-wkt-parser-1.1.2.tgz",
-      "integrity": "sha1-M2oMj8gglKWv+DKI9prt7NNpvww=",
-      "requires": {
-        "terraformer": "1.0.8"
-      }
-    },
     "through": {
       "version": "2.3.8",
       "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
@@ -1150,6 +1413,35 @@
       "resolved": "https://registry.npmjs.org/toposort-class/-/toposort-class-1.0.1.tgz",
       "integrity": "sha1-f/0feMi+KMO6Rc1OGj9e4ZO9mYg="
     },
+    "tough-cookie": {
+      "version": "2.4.3",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
+      "integrity": "sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==",
+      "requires": {
+        "psl": "^1.1.24",
+        "punycode": "^1.4.1"
+      },
+      "dependencies": {
+        "punycode": {
+          "version": "1.4.1",
+          "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
+          "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4="
+        }
+      }
+    },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
+    },
     "type-check": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
@@ -1163,6 +1455,21 @@
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
       "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
     },
+    "uri-js": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
+      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
+      "requires": {
+        "punycode": "^2.1.0"
+      },
+      "dependencies": {
+        "punycode": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
+          "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
+        }
+      }
+    },
     "url": {
       "version": "0.10.3",
       "resolved": "https://registry.npmjs.org/url/-/url-0.10.3.tgz",
@@ -1178,14 +1485,24 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "uuid": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.1.0.tgz",
-      "integrity": "sha512-DIWtzUkw04M4k3bf1IcpS2tngXEL26YUD2M0tMDUpnUrz2hgzUBlD55a4FjdLGPvfHxS6uluGWvaVEqgBcVa+g=="
+      "version": "3.3.3",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.3.tgz",
+      "integrity": "sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ=="
     },
     "validator": {
-      "version": "8.2.0",
-      "resolved": "https://registry.npmjs.org/validator/-/validator-8.2.0.tgz",
-      "integrity": "sha512-Yw5wW34fSv5spzTXNkokD6S6/Oq92d8q/t14TqsS3fAiA1RYnxSFSIZ+CY3n6PGGRCq5HhJTSepQvFUS2QUDxA=="
+      "version": "10.11.0",
+      "resolved": "https://registry.npmjs.org/validator/-/validator-10.11.0.tgz",
+      "integrity": "sha512-X/p3UZerAIsbBfN/IwahhYaBbY68EN/UQBWHtsbXGT5bfrH/p4NQzUCG1kF/rtKaNpnJ7jAu6NGTdSNtyNIXMw=="
+    },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "requires": {
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
+      }
     },
     "walkdir": {
       "version": "0.0.11",
@@ -1193,11 +1510,11 @@
       "integrity": "sha1-oW0CXrkxvQO1LzCMrtD0D86+lTI="
     },
     "wkx": {
-      "version": "0.4.2",
-      "resolved": "https://registry.npmjs.org/wkx/-/wkx-0.4.2.tgz",
-      "integrity": "sha1-d201pjSlwi5lbkdEvetU+D/Szo0=",
+      "version": "0.4.8",
+      "resolved": "https://registry.npmjs.org/wkx/-/wkx-0.4.8.tgz",
+      "integrity": "sha512-ikPXMM9IR/gy/LwiOSqWlSL3X/J5uk9EO2hHNRXS41eTLXaUFEVw9fn/593jW/tE5tedNg8YjT5HkCa4FqQZyQ==",
       "requires": {
-        "@types/node": "8.0.31"
+        "@types/node": "*"
       }
     },
     "wordwrap": {
diff --git a/slack-events-api-message-handler/package.json b/slack-events-api-message-handler/package.json
index 6c0c1f7..ac3e42c 100644
--- a/slack-events-api-message-handler/package.json
+++ b/slack-events-api-message-handler/package.json
@@ -7,7 +7,7 @@
     "claudia": "^2.14.2",
     "pg": "^6.4.2",
     "request": "^2.83.0",
-    "sequelize": "^4.13.2"
+    "sequelize": "^5.15.1"
   },
   "devDependencies": {
     "claudia": "^2.14.2"