diff --git a/src/graphql/validation/validate.py b/src/graphql/validation/validate.py
index 1439f7e4..08c83780 100644
--- a/src/graphql/validation/validate.py
+++ b/src/graphql/validation/validate.py
@@ -14,7 +14,13 @@
 if TYPE_CHECKING:
     from .rules import ASTValidationRule
 
-__all__ = ["assert_valid_sdl", "assert_valid_sdl_extension", "validate", "validate_sdl"]
+__all__ = [
+    "assert_valid_sdl",
+    "assert_valid_sdl_extension",
+    "validate",
+    "validate_sdl",
+    "ValidationAbortedError",
+]
 
 
 class ValidationAbortedError(GraphQLError):