diff --git a/nix/requirements-python27-docutils016.txt b/nix/requirements-python27-docutils016.txt
index 85a22df..3036a28 100644
--- a/nix/requirements-python27-docutils016.txt
+++ b/nix/requirements-python27-docutils016.txt
@@ -13,7 +13,7 @@ configparser==4.0.2
 contextlib2==0.6.0.post1
 coverage==5.5
 coveralls==1.11.1
-cryptography==3.3.2
+cryptography==42.0.4
 docopt==0.6.2
 docutils==0.16
 enum34==1.1.10
diff --git a/nix/requirements-python27-docutils017.txt b/nix/requirements-python27-docutils017.txt
index f7095d3..9135fd2 100644
--- a/nix/requirements-python27-docutils017.txt
+++ b/nix/requirements-python27-docutils017.txt
@@ -13,7 +13,7 @@ configparser==4.0.2
 contextlib2==0.6.0.post1
 coverage==5.5
 coveralls==1.11.1
-cryptography==3.3.2
+cryptography==42.0.4
 docopt==0.6.2
 docutils==0.17.1
 enum34==1.1.10