add new basic constraints vector with path length zero
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index f6197f9..40c4959 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -115,6 +115,9 @@
* ``basic_constraints_not_critical.pem`` - An RSA 2048 bit self-signed
certificate containing a basic constraints extension that is not marked as
critical.
+* ``bc_path_length_zero.pem`` - An RSA 2048 bit self-signed
+ certificate containing a basic constraints extension with a path length of
+ zero.
Custom X.509 Request Vectors
~~~~~~~~~~~~~~~~~~~~~~~~~~~~