diff --git a/pyca-cryptography b/pyca-cryptography
index 277ee0d58c..c18d056738 160000
--- a/pyca-cryptography
+++ b/pyca-cryptography
@@ -1 +1 @@
-Subproject commit 277ee0d58c6c8cfc9517df35c8a020bea33bddf4
+Subproject commit c18d0567386414efa3caef7ed586c4ca75bf3a8b