diff --git a/go.mod b/go.mod
index c3dea830a223c..a62b24eb16ccc 100644
--- a/go.mod
+++ b/go.mod
@@ -7,13 +7,12 @@ require (
 	github.com/agnivade/levenshtein v1.1.0 // indirect
 	github.com/goccy/go-yaml v1.8.9
 	github.com/google/go-cmp v0.5.5
-	github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210410045713-c9e512f85393 // indirect
+	github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210410045713-c9e512f85393
 	github.com/machinebox/graphql v0.2.2
 	github.com/matryer/is v1.4.0 // indirect
 	github.com/mattn/go-zglob v0.0.3
 	github.com/pkg/errors v0.8.1
 	github.com/russross/blackfriday/v2 v2.1.0
 	github.com/urfave/cli/v2 v2.3.0
-	github.com/vektah/gqlparser/v2 v2.1.0
 	golang.org/x/sys v0.0.0-20210403161142-5e06dd20ab57 // indirect
 )
diff --git a/go.sum b/go.sum
index f67d6fce2d349..f35a14f9a0373 100644
--- a/go.sum
+++ b/go.sum
@@ -35,14 +35,6 @@ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/gorilla/context v0.0.0-20160226214623-1ea25387ff6f/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
 github.com/gorilla/mux v1.6.1/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210404043438-758ac252308a h1:IzMV22Hitzxqb71um5i64jEJTyeUVwemK8JmcQdgpA4=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210404043438-758ac252308a/go.mod h1:0sYgRh/Er/ZhHrcKw516TOX4K0ul94vKcBSXAPhLWDc=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210406023454-534efe0eae8e h1:dF5TaS3uw9LA8e75LojnUmnHdhfw1I1ScV9Qy1Stuu8=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210406023454-534efe0eae8e/go.mod h1:0sYgRh/Er/ZhHrcKw516TOX4K0ul94vKcBSXAPhLWDc=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210406143310-243d3ee28500 h1:MU4UNUZ+6KtOt1Kv6AQSefKvSW+6mNoZfrX+A8y82yc=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210406143310-243d3ee28500/go.mod h1:tcoG4afq1O8aR/IjCYadz/CWSie6ouAQYfoAPoNqdmA=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210410035123-2a4e628b7612 h1:9n+WVGphaTd6j10xqUQ6NdQGKy2mhdyEtxWDF+OYfkI=
-github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210410035123-2a4e628b7612/go.mod h1:qU2DZu18blZvWc+6KoEbeTJy5PT2jav/rO1byy47iRU=
 github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210410045713-c9e512f85393 h1:85IH4c5AH0yzTlC6OA6t33jF3B8oK3hOEoBOOvrXxu8=
 github.com/gqlgo/gqlparser/v2 v2.1.1-0.20210410045713-c9e512f85393/go.mod h1:qU2DZu18blZvWc+6KoEbeTJy5PT2jav/rO1byy47iRU=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
diff --git a/internal/introspection/introspection.go b/internal/introspection/introspection.go
index 9d4c38f76e7ff..599a128d9cbb2 100644
--- a/internal/introspection/introspection.go
+++ b/internal/introspection/introspection.go
@@ -177,7 +177,7 @@ func (s *Schema) UnmarshalJSON(data []byte) error {
 	// Make a memo
 	memoizeTypes := make(map[string]*Types, len(s.Types))
 	mid := len(s.Types) / 2
-	for i, j := 0, len(schema.Types)-1; i < mid; i, j = i+1, j-1 {
+	for i, j := 0, len(schema.Types)-1; i <= mid; i, j = i+1, j-1 {
 		memoizeTypes[schema.Types[i].Name] = schema.Types[i]
 		memoizeTypes[schema.Types[j].Name] = schema.Types[j]
 	}