diff --git a/stubs/pyOpenSSL/METADATA.toml b/stubs/pyOpenSSL/METADATA.toml
index 63045095e..18625d708 100644
--- a/stubs/pyOpenSSL/METADATA.toml
+++ b/stubs/pyOpenSSL/METADATA.toml
@@ -3,6 +3,7 @@ upstream_repository = "https://github.com/pyca/pyopenssl"
 # Requires a version of cryptography with a `py.typed` file
 requires = ["cryptography>=35.0.0", "types-cffi"]
 partial_stub = true
+obsolete_since = "24.2.1" # Released on 2024-07-20
 
 [tool.stubtest]
 ignore_missing_stub = true