diff --git a/pkgs/tools/inputmethods/fcitx5/default.nix b/pkgs/tools/inputmethods/fcitx5/default.nix
index 236be8942ad3..42123c74edcc 100644
--- a/pkgs/tools/inputmethods/fcitx5/default.nix
+++ b/pkgs/tools/inputmethods/fcitx5/default.nix
@@ -15,7 +15,7 @@
   wayland,
   systemd,
   wayland-protocols,
-  json_c,
+  nlohmann_json,
   isocodes,
   xkeyboard_config,
   enchant,
@@ -45,13 +45,14 @@ let
 in
 stdenv.mkDerivation rec {
   pname = "fcitx5";
-  version = "5.1.16";
+  version = "5.1.19";
 
   src = fetchFromGitHub {
     owner = "fcitx";
     repo = pname;
     rev = version;
-    hash = "sha256-aedYDpxYeUXadJnV+u1cQrNGoiW8WZKAgP4eNcvkScI=";
+    hash = "sha256-ZsGRVuUpWIJnsSqcAQcerxvwWIRaGdAO2FM1k3D3g0M=";
+    fetchSubmodules = true;
   };
 
   prePatch = ''
@@ -79,7 +80,7 @@ stdenv.mkDerivation rec {
     gdk-pixbuf
     wayland
     wayland-protocols
-    json_c
+    nlohmann_json
     libGL
     libuuid
     libselinux