diff --git a/tests/starwars/test_dsl.py b/tests/starwars/test_dsl.py
index 5807e87f..b105cfa3 100644
--- a/tests/starwars/test_dsl.py
+++ b/tests/starwars/test_dsl.py
@@ -264,9 +264,15 @@ def test_multiple_operations(ds):
         ),
     )
 
+    """
+    From graphql-core version 3.1.5, print_ast() break arguments over multiple lines
+    Accepting both cases here
+    """
+
     assert (
-        print_ast(query)
-        == """query GetHeroName {
+        (
+            print_ast(query)
+            == """query GetHeroName {
   hero {
     name
   }
@@ -280,6 +286,26 @@ def test_multiple_operations(ds):
   }
 }
 """
+        )
+        or (
+            print_ast(query)
+            == """query GetHeroName {
+  hero {
+    name
+  }
+}
+
+mutation CreateReviewMutation {
+  createReview(
+    episode: JEDI
+    review: {stars: 5, commentary: "This is a great movie!"}
+  ) {
+    stars
+    commentary
+  }
+}
+"""
+        )
     )
 
 
diff --git a/tests/starwars/test_validation.py b/tests/starwars/test_validation.py
index 00384c99..468bb553 100644
--- a/tests/starwars/test_validation.py
+++ b/tests/starwars/test_validation.py
@@ -75,9 +75,23 @@ def validation_errors(client, query):
 
 
 def test_incompatible_request_gql(client):
-    with pytest.raises(TypeError) as exc_info:
+    with pytest.raises(TypeError):
         gql(123)
-    assert "body must be a string" in str(exc_info.value)
+
+    """
+    The error generated depends on graphql-core version
+    < 3.1.5: "body must be a string"
+    >= 3.1.5: some variation of "object of type 'int' has no len()"
+              depending on the python environment
+
+    So we are not going to check the exact error message here anymore.
+    """
+
+    """
+    assert ("body must be a string" in str(exc_info.value)) or (
+        "object of type 'int' has no len()" in str(exc_info.value)
+    )
+    """
 
 
 def test_nested_query_with_fragment(client):