diff --git a/pkgs/by-name/gt/gthumb/package.nix b/pkgs/by-name/gt/gthumb/package.nix
index 8f8e610c5ba7..7473b14d885e 100644
--- a/pkgs/by-name/gt/gthumb/package.nix
+++ b/pkgs/by-name/gt/gthumb/package.nix
@@ -19,6 +19,7 @@
   gtk3,
   gsettings-desktop-schemas,
   libchamplain,
+  libjxl,
   librsvg,
   libwebp,
   libX11,
@@ -74,6 +75,7 @@ stdenv.mkDerivation (finalAttrs: {
     libchamplain
     libheif
     libjpeg
+    libjxl
     libraw
     librsvg
     libsecret
@@ -85,6 +87,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   mesonFlags = [
     "-Dlibchamplain=true"
+    "-Dlibjxl=true"
     (lib.mesonBool "webservices" withWebservices)
   ];