diff --git a/pkgs/syd-plex-latex/default.nix b/pkgs/syd-plex-latex/default.nix
index 1a5455e..c4b5c5c 100644
--- a/pkgs/syd-plex-latex/default.nix
+++ b/pkgs/syd-plex-latex/default.nix
@@ -18,6 +18,7 @@ stdenvNoCC.mkDerivation (final: {
       fontspec
       xltxtra
       realscripts
+      xecjk
     ];
     tlType = "run";
   };
diff --git a/pkgs/syd-plex-latex/syd-plex.sty b/pkgs/syd-plex-latex/syd-plex.sty
index a508a82..0f6193d 100755
--- a/pkgs/syd-plex-latex/syd-plex.sty
+++ b/pkgs/syd-plex-latex/syd-plex.sty
@@ -6,8 +6,10 @@
 \renewcommand*{\mathrm}[1]{\symup{#1}}
 
 \RequirePackage{plex-otf}
+\RequirePackage{xeCJK}
 \setmathfont{IBM Plex Math}
 \setmainfont{IBM Plex Serif}
+\setCJKmainfont{IBM Plex Sans KR}
 
 % Use sans-serif for \operatorname
 \setoperatorfont\mathsf