diff --git a/pkgs/applications/networking/mailreaders/notmuch/default.nix b/pkgs/applications/networking/mailreaders/notmuch/default.nix
index 4e28d93e8926..3247f45b06f1 100644
--- a/pkgs/applications/networking/mailreaders/notmuch/default.nix
+++ b/pkgs/applications/networking/mailreaders/notmuch/default.nix
@@ -11,11 +11,11 @@
 
 stdenv.mkDerivation rec {
   pname = "notmuch";
-  version = "0.32.3";
+  version = "0.33";
 
   src = fetchurl {
     url = "https://notmuchmail.org/releases/notmuch-${version}.tar.xz";
-    sha256 = "114bbyjl2ppmy4pw0b5zwmi7lxiz6xd1k6zq0qcgdv7ahkwgybxy";
+    hash = "sha256-iD4EW0v6LEjJpGcQYqQGA6f2Flck3VRhi+66EAVJ0mw=";
   };
 
   nativeBuildInputs = [
@@ -23,6 +23,7 @@ stdenv.mkDerivation rec {
     doxygen                   # (optional) api docs
     pythonPackages.sphinx     # (optional) documentation -> doc/INSTALL
     texinfo                   # (optional) documentation -> doc/INSTALL
+    pythonPackages.cffi
   ] ++ lib.optional withEmacs emacs;
 
   buildInputs = [