diff --git a/server/package.json b/server/package.json
index d9327d7..61bf352 100644
--- a/server/package.json
+++ b/server/package.json
@@ -21,7 +21,7 @@
     "@graphql-tools/graphql-file-loader": "^6.0.0",
     "@graphql-tools/load": "^6.0.0",
     "@graphql-tools/merge": "^6.0.0",
-    "@graphql-tools/schema": "^8.3.3",
+    "@graphql-tools/schema": "^9.0.13",
     "apollo-server": "^3.6.4",
     "apollo-server-core": "^3.6.5",
     "apollo-server-express": "^3.6.5",
diff --git a/yarn.lock b/yarn.lock
index e157697..bfcdced 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -876,7 +876,7 @@
     p-limit "3.1.0"
     tslib "~2.3.0"
 
-"@graphql-tools/merge@8.2.4", "@graphql-tools/merge@^8.2.1":
+"@graphql-tools/merge@8.2.4":
   version "8.2.4"
   resolved "https://registry.npmjs.org/@graphql-tools/merge/-/merge-8.2.4.tgz"
   integrity sha512-hiNRTsS948F+BB4Q7CZXLaGFOIHQzmimVq3EEI/+PQZsPb7kYDzg0Ow0GyV4conDdEiooLqHf7I1dWzTYwvs0A==
@@ -884,6 +884,14 @@
     "@graphql-tools/utils" "8.6.3"
     tslib "~2.3.0"
 
+"@graphql-tools/merge@8.3.15", "@graphql-tools/merge@^8.2.1":
+  version "8.3.15"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/merge/-/merge-8.3.15.tgz#9b24ee5e9c36074684515c7d1587cd3e200c8a8f"
+  integrity sha512-hYYOlsqkUlL6oOo7zzuk6hIv7xQzy+x21sgK84d5FWaiWYkLYh9As8myuDd9SD5xovWWQ9m/iRhIOVDEMSyEKA==
+  dependencies:
+    "@graphql-tools/utils" "9.1.4"
+    tslib "^2.4.0"
+
 "@graphql-tools/merge@^6.0.0", "@graphql-tools/merge@^6.2.12":
   version "6.2.17"
   resolved "https://registry.npmjs.org/@graphql-tools/merge/-/merge-6.2.17.tgz"
@@ -945,7 +953,7 @@
     relay-compiler "12.0.0"
     tslib "~2.3.0"
 
-"@graphql-tools/schema@8.3.3", "@graphql-tools/schema@^8.0.0", "@graphql-tools/schema@^8.0.2", "@graphql-tools/schema@^8.1.2", "@graphql-tools/schema@^8.3.3":
+"@graphql-tools/schema@8.3.3", "@graphql-tools/schema@^8.0.0", "@graphql-tools/schema@^8.0.2", "@graphql-tools/schema@^8.1.2":
   version "8.3.3"
   resolved "https://registry.npmjs.org/@graphql-tools/schema/-/schema-8.3.3.tgz"
   integrity sha512-OrRLU9/7UmkDemeyNUy62uH+FofgV3bpVVZJprc9bhe3gZsY7kQNIdY7H1unINlepjLvGOgk7u7iLo2+EhjyWw==
@@ -955,6 +963,16 @@
     tslib "~2.3.0"
     value-or-promise "1.0.11"
 
+"@graphql-tools/schema@^9.0.13":
+  version "9.0.13"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/schema/-/schema-9.0.13.tgz#56b994777df29ac36586a3200fb6397abf7b9d83"
+  integrity sha512-guRA3fwAtv+M1Kh930P4ydH9aKJTWscIkhVFcWpj/cnjYYxj88jkEJ15ZNiJX/2breNY+sbVgmlgLKb6aXi/Jg==
+  dependencies:
+    "@graphql-tools/merge" "8.3.15"
+    "@graphql-tools/utils" "9.1.4"
+    tslib "^2.4.0"
+    value-or-promise "1.0.12"
+
 "@graphql-tools/url-loader@7.9.4", "@graphql-tools/url-loader@^7.0.11", "@graphql-tools/url-loader@^7.4.2":
   version "7.9.4"
   resolved "https://registry.npmjs.org/@graphql-tools/url-loader/-/url-loader-7.9.4.tgz"
@@ -993,6 +1011,13 @@
   dependencies:
     tslib "~2.3.0"
 
+"@graphql-tools/utils@9.1.4":
+  version "9.1.4"
+  resolved "https://registry.yarnpkg.com/@graphql-tools/utils/-/utils-9.1.4.tgz#2c9e0aefc9655dd73247667befe3c850ec014f3f"
+  integrity sha512-hgIeLt95h9nQgQuzbbdhuZmh+8WV7RZ/6GbTj6t3IU4Zd2zs9yYJ2jgW/krO587GMOY8zCwrjNOMzD40u3l7Vg==
+  dependencies:
+    tslib "^2.4.0"
+
 "@graphql-tools/utils@^7.0.0", "@graphql-tools/utils@^7.5.0":
   version "7.10.0"
   resolved "https://registry.npmjs.org/@graphql-tools/utils/-/utils-7.10.0.tgz"
@@ -6621,10 +6646,10 @@ tslib@^1.8.1, tslib@^1.9.0:
   resolved "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
-tslib@^2, tslib@^2.0.3, tslib@^2.1.0, tslib@^2.3.0, tslib@~2.3.0:
-  version "2.3.1"
-  resolved "https://registry.npmjs.org/tslib/-/tslib-2.3.1.tgz"
-  integrity sha512-77EbyPPpMz+FRFRuAFlWMtmgUWGe9UOG2Z25NqCwiIjRhOf5iKGuzSe5P2w1laq+FkRy4p+PCuVkJSGkzTEKVw==
+tslib@^2, tslib@^2.0.3, tslib@^2.1.0, tslib@^2.3.0, tslib@^2.4.0:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.1.tgz#0d0bfbaac2880b91e22df0768e55be9753a5b17e"
+  integrity sha512-tGyy4dAjRIEwI7BzsB0lynWgOpfqjUdq91XXAlIWD2OwKBH7oCl/GZG/HT4BOHrTlPMOASlMQ7veyTqpmRcrNA==
 
 tslib@~2.0.1:
   version "2.0.3"
@@ -6641,6 +6666,11 @@ tslib@~2.2.0:
   resolved "https://registry.npmjs.org/tslib/-/tslib-2.2.0.tgz"
   integrity sha512-gS9GVHRU+RGn5KQM2rllAlR3dU6m7AcpJKdtH8gFvQiC4Otgk98XnmMU+nZenHt/+VhnBPWwgrJsyrdcw6i23w==
 
+tslib@~2.3.0:
+  version "2.3.1"
+  resolved "https://registry.npmjs.org/tslib/-/tslib-2.3.1.tgz"
+  integrity sha512-77EbyPPpMz+FRFRuAFlWMtmgUWGe9UOG2Z25NqCwiIjRhOf5iKGuzSe5P2w1laq+FkRy4p+PCuVkJSGkzTEKVw==
+
 tsutils@^3.21.0:
   version "3.21.0"
   resolved "https://registry.npmjs.org/tsutils/-/tsutils-3.21.0.tgz"
@@ -6812,11 +6842,16 @@ valid-url@1.0.9, valid-url@^1.0.9:
   resolved "https://registry.npmjs.org/valid-url/-/valid-url-1.0.9.tgz"
   integrity sha1-HBRHm0DxOXp1eC8RXkCGRHQzogA=
 
-value-or-promise@1.0.11, value-or-promise@^1.0.11:
+value-or-promise@1.0.11:
   version "1.0.11"
   resolved "https://registry.npmjs.org/value-or-promise/-/value-or-promise-1.0.11.tgz"
   integrity sha512-41BrgH+dIbCFXClcSapVs5M6GkENd3gQOJpEfPDNa71LsUGMXDL0jMWpI/Rh7WhX+Aalfz2TTS3Zt5pUsbnhLg==
 
+value-or-promise@1.0.12, value-or-promise@^1.0.11:
+  version "1.0.12"
+  resolved "https://registry.yarnpkg.com/value-or-promise/-/value-or-promise-1.0.12.tgz#0e5abfeec70148c78460a849f6b003ea7986f15c"
+  integrity sha512-Z6Uz+TYwEqE7ZN50gwn+1LCVo9ZVrpxRPOhOLnncYkY1ZzOYtrX8Fwf/rFktZ8R5mJms6EZf5TqNOMeZmnPq9Q==
+
 vary@^1, vary@~1.1.2:
   version "1.1.2"
   resolved "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz"