diff --git a/pkgs/tools/security/sequoia/default.nix b/pkgs/tools/security/sequoia/default.nix
index fe0b13bbb973..d1a24f49d802 100644
--- a/pkgs/tools/security/sequoia/default.nix
+++ b/pkgs/tools/security/sequoia/default.nix
@@ -28,6 +28,7 @@ rustPlatform.buildRustPackage rec {
     llvmPackages.libclang
     llvmPackages.clang
     ensureNewerSourcesForZipFilesHook
+    capnproto
   ] ++
     lib.optionals pythonSupport [ pythonPackages.setuptools ]
   ;
@@ -41,9 +42,7 @@ rustPlatform.buildRustPackage rec {
     openssl
     sqlite
     nettle
-    capnproto
-  ]
-    ++ lib.optionals pythonSupport [ pythonPackages.python pythonPackages.cffi ]
+  ] ++ lib.optionals pythonSupport [ pythonPackages.python pythonPackages.cffi ]
     ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Security ]
   ;