diff --git a/deps.nix b/deps.nix
index 7a8c943d..d81c2c81 100644
--- a/deps.nix
+++ b/deps.nix
@@ -3,6 +3,7 @@
 with pkgs;
 
 [ perlPackages.CatalystDevel
+  perlPackages.CatalystPluginSessionStateCookie
   perlPackages.CatalystPluginSessionStoreFastMmap
   perlPackages.CatalystPluginStackTrace
   perlPackages.CatalystPluginAuthorizationRoles