--- pyproject.toml.orig	1970-01-01 00:00:00 UTC
+++ pyproject.toml
@@ -40,7 +40,7 @@ pybreaker = "^1.0.0"
 ]
 pyjwt = "^2.0.0"
 pybreaker = "^1.0.0"
-requests-kerberos = {version = "^0.15.0", optional = true}
+requests-kerberos = {version = "<0.16", optional = true}
 # Optional Rust kernel backend for ``use_kernel=True`` (PyO3 wheel).
 # Pulled in only via the ``[kernel]`` extra below. The published wheel
 # is ``abi3`` with ``Requires-Python: >=3.10`` (built ``abi3-py310``),