diff --git a/validator/imported/graphql-js-commit.log b/validator/imported/graphql-js-commit.log
index 58d20686..ae97536e 100644
--- a/validator/imported/graphql-js-commit.log
+++ b/validator/imported/graphql-js-commit.log
@@ -1 +1 @@
-48afd37a48d37f6d3342b959e8cb34e1ecbfeffb
+e2457b33e928f4ec8b22e96a6dc6cb2808c03dfa
diff --git a/validator/imported/spec/ValuesOfCorrectTypeRule.spec.yml b/validator/imported/spec/ValuesOfCorrectTypeRule.spec.yml
index 194f5824..0d3ef799 100644
--- a/validator/imported/spec/ValuesOfCorrectTypeRule.spec.yml
+++ b/validator/imported/spec/ValuesOfCorrectTypeRule.spec.yml
@@ -1015,21 +1015,6 @@
     - message: Field "OneOfInput.stringField" must be non-null.
       locations:
         - {line: 4, column: 37}
-- name: Invalid oneOf input object value/Exactly one nullable variable
-  rule: ValuesOfCorrectType
-  schema: 0
-  query: |2-
-
-            query ($string: String) {
-              complicatedArgs {
-                oneOfArgField(oneOfArg: { stringField: $string })
-              }
-            }
-            
-  errors:
-    - message: Variable "string" must be non-nullable to be used for OneOf Input Object "OneOfInput".
-      locations:
-        - {line: 4, column: 37}
 - name: Invalid oneOf input object value/More than one field
   rule: ValuesOfCorrectType
   schema: 0
diff --git a/validator/imported/spec/VariablesInAllowedPositionRule.spec.yml b/validator/imported/spec/VariablesInAllowedPositionRule.spec.yml
index e21f0e74..b58ceccc 100644
--- a/validator/imported/spec/VariablesInAllowedPositionRule.spec.yml
+++ b/validator/imported/spec/VariablesInAllowedPositionRule.spec.yml
@@ -346,3 +346,43 @@
               dog @include(if: $boolVar)
             }
   errors: []
+- name: Allows exactly one non-nullable variable
+  rule: VariablesInAllowedPosition
+  schema: 0
+  query: |2-
+
+          query ($string: String!) {
+            complicatedArgs {
+              oneOfArgField(oneOfArg: { stringField: $string })
+            }
+          }
+          
+  errors: []
+- name: Undefined variable in oneOf input object
+  rule: VariablesInAllowedPosition
+  schema: 0
+  query: |2-
+
+          {
+            complicatedArgs {
+              oneOfArgField(oneOfArg: { stringField: $undefinedVariable })
+            }
+          }
+          
+  errors: []
+- name: Forbids one nullable variable
+  rule: VariablesInAllowedPosition
+  schema: 0
+  query: |2-
+
+          query ($string: String) {
+            complicatedArgs {
+              oneOfArgField(oneOfArg: { stringField: $string })
+            }
+          }
+          
+  errors:
+    - message: Variable "$string" is of type "String" but must be non-nullable to be used for OneOf Input Object "OneOfInput".
+      locations:
+        - {line: 2, column: 14}
+        - {line: 4, column: 50}