diff --git a/package.json b/package.json
index 3d3aa2ec..c9f1eed9 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
   "dependencies": {
     "chalk": "^2.4.1",
     "execa": "^1.0.0",
-    "inquirer": "^6.0.0",
+    "inquirer": "^6.3.1",
     "js-yaml": "^3.13.1",
     "mz": "^2.7.0",
     "npm-registry-client": "^8.6.0",
@@ -56,9 +56,10 @@
     "@sourcegraph/tsconfig": "^4.0.0",
     "@sourcegraph/tslint-config": "^12.3.1",
     "@types/execa": "0.9.0",
-    "@types/inquirer": "0.0.44",
+    "@types/inquirer": "6.0.1",
     "@types/js-yaml": "3.12.1",
     "@types/mz": "0.0.32",
+    "@types/node": "^11.13.8",
     "@types/request-promise": "4.1.42",
     "husky": "^0.14.3",
     "json-schema-to-typescript": "^5.5.0",
diff --git a/yarn.lock b/yarn.lock
index 701f8176..8a3f3f67 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -316,13 +316,13 @@
   dependencies:
     "@types/node" "*"
 
-"@types/inquirer@0.0.44":
-  version "0.0.44"
-  resolved "https://registry.yarnpkg.com/@types/inquirer/-/inquirer-0.0.44.tgz#60ce954581cfdf44ad3899ec4cdc5fbe3fef1694"
-  integrity sha512-ugbhy1yBtCz5iTWYF+AGRS/UcMcWicdyHhxl9VaeFYc3ueg0CCssthQLB3rIcIOeGtfG6WPEvHdLu/IjKYfefg==
+"@types/inquirer@6.0.1":
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/@types/inquirer/-/inquirer-6.0.1.tgz#ea9b483a81f16f4f0d27d5c8d9d081dfa36c4ee9"
+  integrity sha512-O9rEHE9iBvYaFAGS0fAlDzqY/3CsOrRKzni4zwnAEce2JrHUEbXAce2Pwwe8ZGzmQkucwSXn1tSiKig37INgfA==
   dependencies:
-    "@types/rx" "*"
     "@types/through" "*"
+    rxjs ">=6.4.0"
 
 "@types/js-yaml@3.12.1":
   version "3.12.1"
@@ -351,7 +351,12 @@
   dependencies:
     "@types/node" "*"
 
-"@types/node@*", "@types/node@^10.9.4":
+"@types/node@*", "@types/node@^11.13.8":
+  version "11.13.8"
+  resolved "https://registry.npmjs.org/@types/node/-/node-11.13.8.tgz#e5d71173c95533be9842b2c798978f095f912aab"
+  integrity sha512-szA3x/3miL90ZJxUCzx9haNbK5/zmPieGraZEe4WI+3srN0eGLiT22NXeMHmyhNEopn+IrxqMc7wdVwvPl8meg==
+
+"@types/node@^10.9.4":
   version "10.12.2"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.12.2.tgz#d77f9faa027cadad9c912cd47f4f8b07b0fb0864"
   integrity sha512-53ElVDSnZeFUUFIYzI8WLQ25IhWzb6vbddNp8UHlXQyU0ET2RhV5zg0NfubzU7iNMh5bBXb0htCzfvrSVNgzaQ==
@@ -379,107 +384,6 @@
     "@types/node" "*"
     "@types/tough-cookie" "*"
 
-"@types/rx-core-binding@*":
-  version "4.0.4"
-  resolved "https://registry.yarnpkg.com/@types/rx-core-binding/-/rx-core-binding-4.0.4.tgz#d969d32f15a62b89e2862c17b3ee78fe329818d3"
-  integrity sha512-5pkfxnC4w810LqBPUwP5bg7SFR/USwhMSaAeZQQbEHeBp57pjKXRlXmqpMrLJB4y1oglR/c2502853uN0I+DAQ==
-  dependencies:
-    "@types/rx-core" "*"
-
-"@types/rx-core@*":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@types/rx-core/-/rx-core-4.0.3.tgz#0b3354b1238cedbe2b74f6326f139dbc7a591d60"
-  integrity sha1-CzNUsSOM7b4rdPYybxOdvHpZHWA=
-
-"@types/rx-lite-aggregates@*":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-aggregates/-/rx-lite-aggregates-4.0.3.tgz#6efb2b7f3d5f07183a1cb2bd4b1371d7073384c2"
-  integrity sha512-MAGDAHy8cRatm94FDduhJF+iNS5//jrZ/PIfm+QYw9OCeDgbymFHChM8YVIvN2zArwsRftKgE33QfRWvQk4DPg==
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite-async@*":
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-async/-/rx-lite-async-4.0.2.tgz#27fbf0caeff029f41e2d2aae638b05e91ceb600c"
-  integrity sha512-vTEv5o8l6702ZwfAM5aOeVDfUwBSDOs+ARoGmWAKQ6LOInQ8J4/zjM7ov12fuTpktUKdMQjkeCp07Vd73mPkxw==
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite-backpressure@*":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-backpressure/-/rx-lite-backpressure-4.0.3.tgz#05abb19bdf87cc740196c355e5d0b37bb50b5d56"
-  integrity sha512-Y6aIeQCtNban5XSAF4B8dffhIKu6aAy/TXFlScHzSxh6ivfQBQw6UjxyEJxIOt3IT49YkS+siuayM2H/Q0cmgA==
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite-coincidence@*":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-coincidence/-/rx-lite-coincidence-4.0.3.tgz#80bd69acc4054a15cdc1638e2dc8843498cd85c0"
-  integrity sha512-1VNJqzE9gALUyMGypDXZZXzR0Tt7LC9DdAZQ3Ou/Q0MubNU35agVUNXKGHKpNTba+fr8GdIdkC26bRDqtCQBeQ==
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite-experimental@*":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-experimental/-/rx-lite-experimental-4.0.1.tgz#c532f5cbdf3f2c15da16ded8930d1b2984023cbd"
-  integrity sha1-xTL1y98/LBXaFt7Ykw0bKYQCPL0=
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite-joinpatterns@*":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-joinpatterns/-/rx-lite-joinpatterns-4.0.1.tgz#f70fe370518a8432f29158cc92ffb56b4e4afc3e"
-  integrity sha1-9w/jcFGKhDLykVjMkv+1a05K/D4=
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite-testing@*":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-testing/-/rx-lite-testing-4.0.1.tgz#21b19d11f4dfd6ffef5a9d1648e9c8879bfe21e9"
-  integrity sha1-IbGdEfTf1v/vWp0WSOnIh5v+Iek=
-  dependencies:
-    "@types/rx-lite-virtualtime" "*"
-
-"@types/rx-lite-time@*":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-time/-/rx-lite-time-4.0.3.tgz#0eda65474570237598f3448b845d2696f2dbb1c4"
-  integrity sha512-ukO5sPKDRwCGWRZRqPlaAU0SKVxmWwSjiOrLhoQDoWxZWg6vyB9XLEZViKOzIO6LnTIQBlk4UylYV0rnhJLxQw==
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite-virtualtime@*":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite-virtualtime/-/rx-lite-virtualtime-4.0.3.tgz#4b30cacd0fe2e53af29f04f7438584c7d3959537"
-  integrity sha512-3uC6sGmjpOKatZSVHI2xB1+dedgml669ZRvqxy+WqmGJDVusOdyxcKfyzjW0P3/GrCiN4nmRkLVMhPwHCc5QLg==
-  dependencies:
-    "@types/rx-lite" "*"
-
-"@types/rx-lite@*":
-  version "4.0.6"
-  resolved "https://registry.yarnpkg.com/@types/rx-lite/-/rx-lite-4.0.6.tgz#3c02921c4244074234f26b772241bcc20c18c253"
-  integrity sha512-oYiDrFIcor9zDm0VDUca1UbROiMYBxMLMaM6qzz4ADAfOmA9r1dYEcAFH+2fsPI5BCCjPvV9pWC3X3flbrvs7w==
-  dependencies:
-    "@types/rx-core" "*"
-    "@types/rx-core-binding" "*"
-
-"@types/rx@*":
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/@types/rx/-/rx-4.1.1.tgz#598fc94a56baed975f194574e0f572fd8e627a48"
-  integrity sha1-WY/JSla67ZdfGUV04PVy/Y5iekg=
-  dependencies:
-    "@types/rx-core" "*"
-    "@types/rx-core-binding" "*"
-    "@types/rx-lite" "*"
-    "@types/rx-lite-aggregates" "*"
-    "@types/rx-lite-async" "*"
-    "@types/rx-lite-backpressure" "*"
-    "@types/rx-lite-coincidence" "*"
-    "@types/rx-lite-experimental" "*"
-    "@types/rx-lite-joinpatterns" "*"
-    "@types/rx-lite-testing" "*"
-    "@types/rx-lite-time" "*"
-    "@types/rx-lite-virtualtime" "*"
-
 "@types/through@*":
   version "0.0.29"
   resolved "https://registry.yarnpkg.com/@types/through/-/through-0.0.29.tgz#72943aac922e179339c651fa34a4428a4d722f93"
@@ -552,7 +456,7 @@ ansi-align@^2.0.0:
   dependencies:
     string-width "^2.0.0"
 
-ansi-escapes@^3.0.0, ansi-escapes@^3.1.0:
+ansi-escapes@^3.1.0, ansi-escapes@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-3.2.0.tgz#8780b98ff9dbf5638152d1f1fe5c1d7b4442976b"
   integrity sha512-cBhpre4ma+U0T1oM5fXg7Dy1Jw7zzwv7lt/GoCpr+hDQJoYnKVPLL4dCvSEFMmQurOQvSrwT7SL/DAlhBI97RQ==
@@ -567,6 +471,11 @@ ansi-regex@^3.0.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
   integrity sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=
 
+ansi-regex@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
+  integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
+
 ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
@@ -972,10 +881,10 @@ chalk@2.3.1:
     escape-string-regexp "^1.0.5"
     supports-color "^5.2.0"
 
-chalk@^2.0.0, chalk@^2.0.1, chalk@^2.3.0, chalk@^2.3.2, chalk@^2.4.1:
-  version "2.4.1"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.1.tgz#18c49ab16a037b6eb0152cc83e3471338215b66e"
-  integrity sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.3.0, chalk@^2.3.2, chalk@^2.4.1, chalk@^2.4.2:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
+  integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
   dependencies:
     ansi-styles "^3.2.1"
     escape-string-regexp "^1.0.5"
@@ -1775,7 +1684,7 @@ extend@~3.0.2:
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
   integrity sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g==
 
-external-editor@^3.0.0:
+external-editor@^3.0.3:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/external-editor/-/external-editor-3.0.3.tgz#5866db29a97826dbe4bf3afd24070ead9ea43a27"
   integrity sha512-bn71H9+qWoOQKyZDo25mOMVpSmXROAsTJVVVYzrrtol3d4y+AsKjf4Iwl2Q+IuT0kFSQ1qo166UuIwqYq7mGnA==
@@ -2353,23 +2262,23 @@ init-package-json@^1.10.3:
     validate-npm-package-license "^3.0.1"
     validate-npm-package-name "^3.0.0"
 
-inquirer@^6.0.0:
-  version "6.2.0"
-  resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-6.2.0.tgz#51adcd776f661369dc1e894859c2560a224abdd8"
-  integrity sha512-QIEQG4YyQ2UYZGDC4srMZ7BjHOmNk1lR2JQj5UknBapklm6WHA+VVH7N+sUdX3A7NeCfGF8o4X1S3Ao7nAcIeg==
+inquirer@^6.3.1:
+  version "6.3.1"
+  resolved "https://registry.yarnpkg.com/inquirer/-/inquirer-6.3.1.tgz#7a413b5e7950811013a3db491c61d1f3b776e8e7"
+  integrity sha512-MmL624rfkFt4TG9y/Jvmt8vdmOo836U7Y0Hxr2aFk3RelZEGX4Igk0KabWrcaaZaTv9uzglOqWh1Vly+FAWAXA==
   dependencies:
-    ansi-escapes "^3.0.0"
-    chalk "^2.0.0"
+    ansi-escapes "^3.2.0"
+    chalk "^2.4.2"
     cli-cursor "^2.1.0"
     cli-width "^2.0.0"
-    external-editor "^3.0.0"
+    external-editor "^3.0.3"
     figures "^2.0.0"
-    lodash "^4.17.10"
+    lodash "^4.17.11"
     mute-stream "0.0.7"
     run-async "^2.2.0"
-    rxjs "^6.1.0"
+    rxjs "^6.4.0"
     string-width "^2.1.0"
-    strip-ansi "^4.0.0"
+    strip-ansi "^5.1.0"
     through "^2.3.6"
 
 into-stream@^4.0.0:
@@ -4486,10 +4395,10 @@ rxjs-tslint-rules@^4.12.0:
     tslib "^1.8.0"
     tsutils "^3.0.0"
 
-rxjs@^6.1.0:
-  version "6.3.3"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.3.3.tgz#3c6a7fa420e844a81390fb1158a9ec614f4bad55"
-  integrity sha512-JTWmoY9tWCs7zvIk/CvRjhjGaOd+OVBM987mxFo+OW66cGpdKjZcpmc74ES1sB//7Kl/PAe8+wEakuhG4pcgOw==
+rxjs@>=6.4.0, rxjs@^6.4.0:
+  version "6.5.1"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.5.1.tgz#f7a005a9386361921b8524f38f54cbf80e5d08f4"
+  integrity sha512-y0j31WJc83wPu31vS1VlAFW5JGrnGC+j+TtGAa1fRQphy48+fDYiDmX8tjGloToEsMkxnouOg/1IzXGKkJnZMg==
   dependencies:
     tslib "^1.9.0"
 
@@ -4945,6 +4854,13 @@ strip-ansi@^4.0.0:
   dependencies:
     ansi-regex "^3.0.0"
 
+strip-ansi@^5.1.0:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-5.2.0.tgz#8c9a536feb6afc962bdfa5b104a5091c1ad9c0ae"
+  integrity sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==
+  dependencies:
+    ansi-regex "^4.1.0"
+
 strip-bom@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"