diff --git a/package.json b/package.json
index 3d4864d..344f363 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "ava": "0.25.0",
     "graphql": "0.13.2",
     "graphql-middleware": "1.7.8",
-    "graphql-tools": "4.0.4",
+    "graphql-tools": "9.0.24",
     "prettier": "1.14.3",
     "prettier-check": "2.0.0",
     "semantic-release": "15.8.1",
diff --git a/yarn.lock b/yarn.lock
index ae42ea7..5fd2027 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,19 @@
 # yarn lockfile v1
 
 
+"@apollo/client@~4.0.9":
+  version "4.0.9"
+  resolved "https://registry.yarnpkg.com/@apollo/client/-/client-4.0.9.tgz#fdc0388f73a1640f3da30a8791e448b96ad0b49a"
+  integrity sha512-Lh2drMzFE9x5jVS8RKmlGL5SORkvpyUJIT+wTErxDUR2HpWePiBfhhcHHRSlZFiCR866ewCv4euTc4IDF0GWxw==
+  dependencies:
+    "@graphql-typed-document-node/core" "^3.1.1"
+    "@wry/caches" "^1.0.0"
+    "@wry/equality" "^0.5.6"
+    "@wry/trie" "^0.5.0"
+    graphql-tag "^2.12.6"
+    optimism "^0.18.0"
+    tslib "^2.3.0"
+
 "@ava/babel-plugin-throws-helper@^2.0.0":
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/@ava/babel-plugin-throws-helper/-/babel-plugin-throws-helper-2.0.0.tgz#2fc1fe3c211a71071a4eca7b8f7af5842cd1ae7c"
@@ -51,6 +64,38 @@
   dependencies:
     arrify "^1.0.1"
 
+"@graphql-tools/merge@^9.1.5":
+  version "9.1.5"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/merge/-/merge-9.1.5.tgz#db61fc3ee8f7cff4636fddded796037acad5e0c6"
+  integrity sha512-eVcir6nCcOC/Wzv7ZAng3xec3dj6FehE8+h9TvgvUyrDEKVMdFfrO6etRFZ2hucWVcY8S6drx7zQx04N4lPM8Q==
+  dependencies:
+    "@graphql-tools/utils" "^10.10.3"
+    tslib "^2.4.0"
+
+"@graphql-tools/schema@^10.0.29":
+  version "10.0.29"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/schema/-/schema-10.0.29.tgz#cbb0d0cdeb2c55559ace51e2ffadee39990d01c0"
+  integrity sha512-+Htiupnq6U/AWOEAJerIOGT1pAf4u43Q3n2JmFpqFfYJchz6sKWZ7L9Lpe/NusaaUQty/IOF+eQlNFypEaWxhg==
+  dependencies:
+    "@graphql-tools/merge" "^9.1.5"
+    "@graphql-tools/utils" "^10.10.3"
+    tslib "^2.4.0"
+
+"@graphql-tools/utils@^10.10.3":
+  version "10.10.3"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/utils/-/utils-10.10.3.tgz#1c6ad8d824ad3fd05571cd2bfdce863c497136d4"
+  integrity sha512-2EdYiefeLLxsoeZTukSNZJ0E/Z5NnWBUGK2VJa0DQj1scDhVd93HeT1eW9TszJOYmIh3eWAKLv58ri/1XUmdsQ==
+  dependencies:
+    "@graphql-typed-document-node/core" "^3.1.1"
+    "@whatwg-node/promise-helpers" "^1.0.0"
+    cross-inspect "1.0.1"
+    tslib "^2.4.0"
+
+"@graphql-typed-document-node/core@^3.1.1":
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/@graphql-typed-document-node/core/-/core-3.2.0.tgz#5f3d96ec6b2354ad6d8a28bf216a1d97b5426861"
+  integrity sha512-mB9oAsNCm9aM3/SOv4YtBMqZbYj10R7dkq8byBqxGY/ncFwhf2oQzMV+LCRlWoDSEBJ3COiR1yeDvMtsoOsuFQ==
+
 "@ladjs/time-require@^0.1.4":
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/@ladjs/time-require/-/time-require-0.1.4.tgz#5c615d75fd647ddd5de9cf6922649558856b21a1"
@@ -158,6 +203,41 @@
   version "0.13.4"
   resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.13.4.tgz#55ae9c29f0fd6b85ee536f5c72b4769d5c5e06b1"
 
+"@whatwg-node/promise-helpers@^1.0.0":
+  version "1.3.2"
+  resolved "https://registry.yarnpkg.com/@whatwg-node/promise-helpers/-/promise-helpers-1.3.2.tgz#3b54987ad6517ef6db5920c66a6f0dada606587d"
+  integrity sha512-Nst5JdK47VIl9UcGwtv2Rcgyn5lWtZ0/mhRQ4G8NN2isxpq2TO30iqHzmwoJycjWuyUfg3GFXqP/gFHXeV57IA==
+  dependencies:
+    tslib "^2.6.3"
+
+"@wry/caches@^1.0.0":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/@wry/caches/-/caches-1.0.1.tgz#8641fd3b6e09230b86ce8b93558d44cf1ece7e52"
+  integrity sha512-bXuaUNLVVkD20wcGBWRyo7j9N3TxePEWFZj2Y+r9OoUzfqmavM84+mFykRicNsBqatba5JLay1t48wxaXaWnlA==
+  dependencies:
+    tslib "^2.3.0"
+
+"@wry/context@^0.7.0":
+  version "0.7.4"
+  resolved "https://registry.yarnpkg.com/@wry/context/-/context-0.7.4.tgz#e32d750fa075955c4ab2cfb8c48095e1d42d5990"
+  integrity sha512-jmT7Sb4ZQWI5iyu3lobQxICu2nC/vbUhP0vIdd6tHC9PTfenmRmuIFqktc6GH9cgi+ZHnsLWPvfSvc4DrYmKiQ==
+  dependencies:
+    tslib "^2.3.0"
+
+"@wry/equality@^0.5.6":
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/@wry/equality/-/equality-0.5.7.tgz#72ec1a73760943d439d56b7b1e9985aec5d497bb"
+  integrity sha512-BRFORjsTuQv5gxcXsuDXx6oGRhuVsEGwZy6LOzRRfgu+eSfxbhUQ9L9YtSEIuIjY/o7g3iWFjrc5eSY1GXP2Dw==
+  dependencies:
+    tslib "^2.3.0"
+
+"@wry/trie@^0.5.0":
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/@wry/trie/-/trie-0.5.0.tgz#11e783f3a53f6e4cd1d42d2d1323f5bc3fa99c94"
+  integrity sha512-FNoYzHawTMk/6KMQoEG5O4PuioX19UbwdQKF44yw0nLfOypfQdjtfZzo/UIJWAJ23sNIFbD1Ug9lbaDGMwbqQA==
+  dependencies:
+    tslib "^2.3.0"
+
 JSONStream@^1.0.4:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.3.tgz#27b4b8fbbfeab4e71bcf551e7f27be8d952239bf"
@@ -1214,6 +1294,13 @@ create-error-class@^3.0.0:
   dependencies:
     capture-stack-trace "^1.0.0"
 
+cross-inspect@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/cross-inspect/-/cross-inspect-1.0.1.tgz#15f6f65e4ca963cf4cc1a2b5fef18f6ca328712b"
+  integrity sha512-Pcw1JTvZLSJH83iiGWt6fRcT+BjZlCDRVwYLbUcHzv/CRpB7r0MlSrGbIyQvVSNyGnbt7G4AXuyCiDR3POvZ1A==
+  dependencies:
+    tslib "^2.4.0"
+
 cross-spawn@^5.0.1:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
@@ -1846,15 +1933,22 @@ graphql-middleware@1.7.8:
   dependencies:
     graphql-tools "^4.0.2"
 
-graphql-tools@4.0.4:
-  version "4.0.4"
-  resolved "https://registry.yarnpkg.com/graphql-tools/-/graphql-tools-4.0.4.tgz#ca08a63454221fdde825fe45fbd315eb2a6d566b"
+graphql-tag@^2.12.6:
+  version "2.12.6"
+  resolved "https://registry.yarnpkg.com/graphql-tag/-/graphql-tag-2.12.6.tgz#d441a569c1d2537ef10ca3d1633b48725329b5f1"
+  integrity sha512-FdSNcu2QQcWnM2VNvSCCDCVS5PpPqpzgFT8+GXzqJuoDd0CBncxCY278u4mhRO7tMgo2JjgJA5aZ+nWSQ/Z+xg==
   dependencies:
-    apollo-link "^1.2.3"
-    apollo-utilities "^1.0.1"
-    deprecated-decorator "^0.1.6"
-    iterall "^1.1.3"
-    uuid "^3.1.0"
+    tslib "^2.1.0"
+
+graphql-tools@9.0.24:
+  version "9.0.24"
+  resolved "https://registry.yarnpkg.com/graphql-tools/-/graphql-tools-9.0.24.tgz#0bb3bb7d2794836689d2f333d3fbb35ed987d731"
+  integrity sha512-TMi6Ji0KxRZkf6gtQrZcNLBYXOBKjaYCqlaeU/DbeWSnCsIxERgv0jHZ2FVpsVZbZCHmtBaX3r+MWU/1XIhHsg==
+  dependencies:
+    "@graphql-tools/schema" "^10.0.29"
+    tslib "^2.4.0"
+  optionalDependencies:
+    "@apollo/client" "~4.0.9"
 
 graphql-tools@^4.0.2:
   version "4.0.2"
@@ -2982,6 +3076,16 @@ onetime@^2.0.0:
   dependencies:
     mimic-fn "^1.0.0"
 
+optimism@^0.18.0:
+  version "0.18.1"
+  resolved "https://registry.yarnpkg.com/optimism/-/optimism-0.18.1.tgz#5cf16847921413dbb0ac809907370388b9c6335f"
+  integrity sha512-mLXNwWPa9dgFyDqkNi54sjDyNJ9/fTI6WGBLgnXku1vdKY/jovHfZT5r+aiVeFFLOz+foPNOm5YJ4mqgld2GBQ==
+  dependencies:
+    "@wry/caches" "^1.0.0"
+    "@wry/context" "^0.7.0"
+    "@wry/trie" "^0.5.0"
+    tslib "^2.3.0"
+
 optimist@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"
@@ -4056,6 +4160,11 @@ tslib@^1.8.0, tslib@^1.8.1:
   version "1.9.2"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.2.tgz#8be0cc9a1f6dc7727c38deb16c2ebd1a2892988e"
 
+tslib@^2.1.0, tslib@^2.3.0, tslib@^2.4.0, tslib@^2.6.3:
+  version "2.8.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.8.1.tgz#612efe4ed235d567e8aba5f2a5fab70280ade83f"
+  integrity sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==
+
 tslint-config-prettier@1.15.0:
   version "1.15.0"
   resolved "https://registry.yarnpkg.com/tslint-config-prettier/-/tslint-config-prettier-1.15.0.tgz#76b9714399004ab6831fdcf76d89b73691c812cf"