diff --git a/packages/graphql-language-server/package.json b/packages/graphql-language-server/package.json
index 215083c4f8b..8bfdd570a0a 100644
--- a/packages/graphql-language-server/package.json
+++ b/packages/graphql-language-server/package.json
@@ -18,6 +18,6 @@
   },
   "homepage": "https://github.com/graphql/graphql-language-service#readme",
   "dependencies": {
-    "graphql-config": "1.1.4"
+    "graphql-config": "2.0.1"
   }
 }
diff --git a/packages/graphql-language-service/package.json b/packages/graphql-language-service/package.json
index 11cdd91d251..64ba99d9e5c 100644
--- a/packages/graphql-language-service/package.json
+++ b/packages/graphql-language-service/package.json
@@ -1,7 +1,7 @@
 {
   "name": "graphql-language-service",
   "repository": "https://github.com/graphql/graphql-language-service",
-  "version": "1.1.2",
+  "version": "1.2.0",
   "description": "An interface for building GraphQL language services for IDEs",
   "contributors": [
     "Hyohyeon Jeong <asiandrummer@fb.com>",
@@ -29,14 +29,14 @@
     "prepublish": "node ../../resources/prepublish.js"
   },
   "peerDependencies": {
-    "graphql": "^0.6.0 || ^0.7.0 || ^0.8.0-b || ^0.9.0 || ^0.10.0 || ^0.11.0 || ^0.12.0"
+    "graphql": "^0.6.0 || ^0.7.0 || ^0.8.0-b || ^0.9.0 || ^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0"
   },
   "dependencies": {
     "babel-polyfill": "6.16.0",
-    "graphql-config": "1.1.4",
-    "graphql-language-service-interface": "^1.1.0",
-    "graphql-language-service-server": "^1.1.2",
-    "graphql-language-service-utils": "^1.1.0",
+    "graphql-config": "2.0.1",
+    "graphql-language-service-interface": "^1.2.0",
+    "graphql-language-service-server": "^1.2.0",
+    "graphql-language-service-utils": "^1.2.1",
     "yargs": "^3.32.0 || ^7.0.0"
   }
 }
diff --git a/packages/interface/package.json b/packages/interface/package.json
index e126b16d3ee..c3f2ffcabc5 100644
--- a/packages/interface/package.json
+++ b/packages/interface/package.json
@@ -1,7 +1,7 @@
 {
   "name": "graphql-language-service-interface",
   "repository": "https://github.com/graphql/graphql-language-service",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Interface to the GraphQL Language Service",
   "contributors": [
     "Greg Hurrell <greg@hurrell.net> (https://greg.hurrell.net/)",
@@ -26,12 +26,12 @@
     "prepublish": "node ../../resources/prepublish.js"
   },
   "peerDependencies": {
-    "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0"
+    "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0"
   },
   "dependencies": {
-    "graphql-config": "1.1.4",
+    "graphql-config": "2.0.1",
     "graphql-language-service-parser": "^1.1.0",
-    "graphql-language-service-types": "^1.1.0",
-    "graphql-language-service-utils": "^1.1.0"
+    "graphql-language-service-types": "^1.2.1",
+    "graphql-language-service-utils": "^1.2.1"
   }
 }
diff --git a/packages/parser/package.json b/packages/parser/package.json
index bbb264ad1e6..f150a2cbbd2 100644
--- a/packages/parser/package.json
+++ b/packages/parser/package.json
@@ -25,8 +25,11 @@
     "build-flow": "babel-node ../../resources/buildFlow.js",
     "prepublish": "node ../../resources/prepublish.js"
   },
+  "peerDependencies": {
+    "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0"
+  },
   "dependencies": {
-    "graphql-config": "1.1.4",
-    "graphql-language-service-types": "^1.1.0"
+    "graphql-config": "2.0.1",
+    "graphql-language-service-types": "^1.2.1"
   }
 }
diff --git a/packages/server/package.json b/packages/server/package.json
index 7fbae141d5b..b892d495765 100644
--- a/packages/server/package.json
+++ b/packages/server/package.json
@@ -1,7 +1,7 @@
 {
   "name": "graphql-language-service-server",
   "repository": "https://github.com/graphql/graphql-language-service",
-  "version": "1.1.2",
+  "version": "1.2.0",
   "description": "Server process backing the GraphQL Language Service",
   "contributors": [
     "Greg Hurrell <greg@hurrell.net> (https://greg.hurrell.net/)",
@@ -26,16 +26,16 @@
     "prepublish": "node ../../resources/prepublish.js"
   },
   "peerDependencies": {
-    "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0"
+    "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0"
   },
   "dependencies": {
     "babylon": "^6.17.4",
     "fb-watchman": "^2.0.0",
     "glob": "^7.1.2",
-    "graphql-config": "1.1.4",
-    "graphql-language-service-interface": "^1.1.0",
-    "graphql-language-service-types": "^1.1.0",
-    "graphql-language-service-utils": "^1.1.0",
+    "graphql-config": "2.0.1",
+    "graphql-language-service-interface": "^1.2.0",
+    "graphql-language-service-types": "^1.2.1",
+    "graphql-language-service-utils": "^1.2.1",
     "nullthrows": "^1.0.0",
     "vscode-jsonrpc": "^3.3.0",
     "vscode-languageserver": "^3.3.0"
diff --git a/packages/types/package.json b/packages/types/package.json
index ad76bf717fb..2d7dc5eb172 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,7 +1,7 @@
 {
   "name": "graphql-language-service-types",
   "repository": "https://github.com/graphql/graphql-language-service",
-  "version": "1.1.0",
+  "version": "1.2.1",
   "description": "Types for building GraphQL language services for IDEs",
   "contributors": [
     "Greg Hurrell <greg@hurrell.net> (https://greg.hurrell.net/)",
@@ -29,6 +29,6 @@
     "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0"
   },
   "dependencies": {
-    "graphql-config": "1.1.4"
+    "graphql-config": "2.0.1"
   }
 }
diff --git a/packages/utils/package.json b/packages/utils/package.json
index 7e80b50836c..e969ae55cae 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -1,7 +1,7 @@
 {
   "name": "graphql-language-service-utils",
   "repository": "https://github.com/graphql/graphql-language-service",
-  "version": "1.1.0",
+  "version": "1.2.1",
   "description": "Utilities to support the GraphQL Language Service",
   "contributors": [
     "Greg Hurrell <greg@hurrell.net> (https://greg.hurrell.net/)",
@@ -26,10 +26,10 @@
     "prepublish": "node ../../resources/prepublish.js"
   },
   "peerDependencies": {
-    "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0"
+    "graphql": "^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0"
   },
   "dependencies": {
-    "graphql-config": "1.1.4",
-    "graphql-language-service-types": "^1.1.0"
+    "graphql-config": "2.0.1",
+    "graphql-language-service-types": "^1.2.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 57a89e2318b..7b7d371e872 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -55,14 +55,6 @@
     lodash "^4.2.0"
     to-fast-properties "^2.0.0"
 
-"@types/graphql@0.11.7":
-  version "0.11.7"
-  resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.11.7.tgz#da39a2f7c74e793e32e2bb7b3b68da1691532dd5"
-
-"@types/lodash@^4.14.85":
-  version "4.14.91"
-  resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.91.tgz#794611b28056d16b5436059c6d800b39d573cd3a"
-
 JSONStream@^1.0.4:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.1.tgz#707f761e01dae9e16f1bcf93703b78c70966579a"
@@ -1061,11 +1053,11 @@ core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
-cross-fetch@0.0.8:
-  version "0.0.8"
-  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-0.0.8.tgz#01ed94dc407df2c00f1807fde700a7cfa48a205c"
+cross-fetch@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-2.0.0.tgz#a17475449561e0f325146cea636a8619efb9b382"
   dependencies:
-    node-fetch "1.7.3"
+    node-fetch "2.0.0"
     whatwg-fetch "2.0.3"
 
 cross-spawn@^5.0.1, cross-spawn@^5.1.0:
@@ -1209,12 +1201,6 @@ ecc-jsbn@~0.1.1:
   dependencies:
     jsbn "~0.1.0"
 
-encoding@^0.1.11:
-  version "0.1.12"
-  resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
-  dependencies:
-    iconv-lite "~0.4.13"
-
 error-ex@^1.2.0, error-ex@^1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/error-ex/-/error-ex-1.3.1.tgz#f855a86ce61adc4e8621c3cda21e7a7612c3a8dc"
@@ -1694,24 +1680,20 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.4, graceful-fs@^4.1.6:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
-graphql-config@1.1.4:
-  version "1.1.4"
-  resolved "https://registry.yarnpkg.com/graphql-config/-/graphql-config-1.1.4.tgz#af09659f877b96451838de456e4e4f4be45be6dd"
+graphql-config@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/graphql-config/-/graphql-config-2.0.1.tgz#d34a9bdf1d7360af7b01db9b20260a342ddc7390"
   dependencies:
-    graphql "^0.12.3"
-    graphql-import "^0.1.7"
-    graphql-request "^1.4.0"
+    graphql-import "^0.4.4"
+    graphql-request "^1.5.0"
     js-yaml "^3.10.0"
+    lodash "^4.17.4"
     minimatch "^3.0.4"
-    rimraf "^2.6.2"
 
-graphql-import@^0.1.7:
-  version "0.1.9"
-  resolved "https://registry.yarnpkg.com/graphql-import/-/graphql-import-0.1.9.tgz#9161f4f7ea92337b60fd40e22e64d3a68c212729"
+graphql-import@^0.4.4:
+  version "0.4.5"
+  resolved "https://registry.yarnpkg.com/graphql-import/-/graphql-import-0.4.5.tgz#e2f18c28d335733f46df8e0733d8deb1c6e2a645"
   dependencies:
-    "@types/graphql" "0.11.7"
-    "@types/lodash" "^4.14.85"
-    graphql "^0.12.3"
     lodash "^4.17.4"
 
 graphql-language-service-parser@^0.1.0-0:
@@ -1724,11 +1706,11 @@ graphql-language-service-types@^0.1.0-0, graphql-language-service-types@^0.1.14:
   version "0.1.14"
   resolved "https://registry.yarnpkg.com/graphql-language-service-types/-/graphql-language-service-types-0.1.14.tgz#e6112785fc23ea8222f59a7f00e61b359f263c88"
 
-graphql-request@^1.4.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/graphql-request/-/graphql-request-1.4.0.tgz#f5b067c83070296d93fb45760e83dfad0d9f537a"
+graphql-request@^1.5.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/graphql-request/-/graphql-request-1.6.0.tgz#afe87cf2a336acabb0cc2a875900202eda89f412"
   dependencies:
-    cross-fetch "0.0.8"
+    cross-fetch "2.0.0"
 
 graphql@^0.12.3:
   version "0.12.3"
@@ -1811,7 +1793,7 @@ http-signature@~1.1.0:
     jsprim "^1.2.2"
     sshpk "^1.7.0"
 
-iconv-lite@^0.4.17, iconv-lite@~0.4.13:
+iconv-lite@^0.4.17:
   version "0.4.19"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
 
@@ -2003,7 +1985,7 @@ is-resolvable@^1.0.0:
   dependencies:
     tryit "^1.0.1"
 
-is-stream@^1.0.1, is-stream@^1.1.0:
+is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
 
@@ -2399,12 +2381,9 @@ natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
 
-node-fetch@1.7.3:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
+node-fetch@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.0.0.tgz#982bba43ecd4f2922a29cc186a6bbb0bb73fcba6"
 
 node-int64@^0.4.0:
   version "0.4.0"
@@ -2894,7 +2873,7 @@ right-align@^0.1.1:
   dependencies:
     align-text "^0.1.1"
 
-rimraf@2, rimraf@^2.2.8, rimraf@^2.5.1, rimraf@^2.6.1, rimraf@^2.6.2:
+rimraf@2, rimraf@^2.2.8, rimraf@^2.5.1, rimraf@^2.6.1:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.2.tgz#2ed8150d24a16ea8651e6d6ef0f47c4158ce7a36"
   dependencies: