diff --git a/pkgs/development/python-modules/tempest/default.nix b/pkgs/development/python-modules/tempest/default.nix
index fcae826816fb..63ed58fca0b9 100644
--- a/pkgs/development/python-modules/tempest/default.nix
+++ b/pkgs/development/python-modules/tempest/default.nix
@@ -19,6 +19,7 @@
   paramiko,
   pbr,
   prettytable,
+  pynacl,
   python,
   pythonOlder,
   pyyaml,
@@ -74,6 +75,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     hacking
     oslotest
+    pynacl
     stestr
   ];