diff --git a/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix b/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix
index fcb699298fe9..48855377f2ff 100644
--- a/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix
+++ b/pkgs/development/libraries/qt-6/modules/qtdeclarative.nix
@@ -1,5 +1,6 @@
 { qtModule
 , qtbase
+, qtlanguageserver
 , qtshadertools
 , openssl
 , python3
@@ -7,7 +8,7 @@
 
 qtModule {
   pname = "qtdeclarative";
-  qtInputs = [ qtbase qtshadertools ];
+  qtInputs = [ qtbase qtlanguageserver qtshadertools ];
   propagatedBuildInputs = [ openssl python3 ];
   preConfigure = ''
     export LD_LIBRARY_PATH="$PWD/build/lib''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH"