diff --git a/package.json b/package.json
index 704b094..4de374a 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "graphql-tools": "2.21.0",
     "helmet": "3.12.0",
     "lru-cache": "4.1.2",
-    "merge-graphql-schemas": "1.5.0",
+    "merge-graphql-schemas": "1.5.4",
     "morgan": "^1.9.0",
     "pg-promise": "8.2.2",
     "prettier": "1.11.1",
diff --git a/yarn.lock b/yarn.lock
index d4f9450..637bea5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1797,9 +1797,9 @@ deep-is@~0.1.3:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
 
-deepmerge@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-2.0.1.tgz#25c1c24f110fb914f80001b925264dd77f3f4312"
+deepmerge@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-2.1.1.tgz#e862b4e45ea0555072bf51e7fd0d9845170ae768"
 
 default-require-extensions@^1.0.0:
   version "1.0.0"
@@ -2489,6 +2489,17 @@ glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.1.1, glob@^7.1.2:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+glob@^7.1.3:
+  version "7.1.3"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 global-dirs@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/global-dirs/-/global-dirs-0.1.1.tgz#b319c0dd4607f353f3be9cca4c72fc148c49f445"
@@ -3876,12 +3887,12 @@ merge-descriptors@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
 
-merge-graphql-schemas@1.5.0:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/merge-graphql-schemas/-/merge-graphql-schemas-1.5.0.tgz#d86278cb1102fe14bb308288136325971aecd86e"
+merge-graphql-schemas@1.5.4:
+  version "1.5.4"
+  resolved "https://registry.yarnpkg.com/merge-graphql-schemas/-/merge-graphql-schemas-1.5.4.tgz#02829f71bd322374771753c5878522491b8945d2"
   dependencies:
-    deepmerge "^2.0.1"
-    glob "^7.1.2"
+    deepmerge "^2.1.1"
+    glob "^7.1.3"
     is-glob "^4.0.0"
 
 merge-stream@^1.0.1:
@@ -4432,16 +4443,7 @@ pg-pool@~2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/pg-pool/-/pg-pool-2.0.3.tgz#c022032c8949f312a4f91fb6409ce04076be3257"
 
-pg-promise@8.2.1:
-  version "8.2.1"
-  resolved "https://registry.yarnpkg.com/pg-promise/-/pg-promise-8.2.1.tgz#af11f4009a8d9d0e0d37d2915a5e7e0f66865838"
-  dependencies:
-    manakin "0.5.1"
-    pg "7.4.1"
-    pg-minify "0.5.4"
-    spex "2.0.2"
-
-pg-promise@^8.2.1:
+pg-promise@8.2.2, pg-promise@^8.2.1:
   version "8.2.2"
   resolved "https://registry.yarnpkg.com/pg-promise/-/pg-promise-8.2.2.tgz#079a71eb358ef7f27f78f4bc3653a1f4bb9266e6"
   dependencies: