diff --git a/src/graphql_relay/connection/connection.py b/src/graphql_relay/connection/connection.py
index 2058baa..3321353 100644
--- a/src/graphql_relay/connection/connection.py
+++ b/src/graphql_relay/connection/connection.py
@@ -152,12 +152,15 @@ class PageInfoType(Protocol):
     def startCursor(self) -> Optional[ConnectionCursor]:
         ...
 
+    @property
     def endCursor(self) -> Optional[ConnectionCursor]:
         ...
 
+    @property
     def hasPreviousPage(self) -> bool:
         ...
 
+    @property
     def hasNextPage(self) -> bool:
         ...
 
diff --git a/tests/connection/test_connection.py b/tests/connection/test_connection.py
index 025cb2d..39a92f4 100644
--- a/tests/connection/test_connection.py
+++ b/tests/connection/test_connection.py
@@ -17,6 +17,7 @@
     connection_definitions,
     connection_from_array,
     forward_connection_args,
+    PageInfoType,
 )
 
 from ..utils import dedent
@@ -98,6 +99,17 @@ class User(NamedTuple):
 schema = GraphQLSchema(query=query_type)
 
 
+def describe_page_info_type():
+    def defines_all_members_as_properties():
+        for member_name in (
+            "startCursor",
+            "endCursor",
+            "hasPreviousPage",
+            "hasNextPage",
+        ):
+            assert type(getattr(PageInfoType, member_name)) is property
+
+
 def describe_connection_definition():
     def includes_connection_and_edge_fields():
         source = """