diff --git a/pkgs/development/libraries/libjxl/default.nix b/pkgs/development/libraries/libjxl/default.nix
index be0a4fb91549..6eba2d0112ef 100644
--- a/pkgs/development/libraries/libjxl/default.nix
+++ b/pkgs/development/libraries/libjxl/default.nix
@@ -23,6 +23,8 @@ stdenv.mkDerivation rec {
   pname = "libjxl";
   version = "0.6.1";
 
+  outputs = [ "out" "dev" ];
+
   src = fetchFromGitHub {
     owner = "libjxl";
     repo = "libjxl";
diff --git a/pkgs/development/libraries/liblqr-1/default.nix b/pkgs/development/libraries/liblqr-1/default.nix
index 914cc0c2ab69..b9e6eeba0f3f 100644
--- a/pkgs/development/libraries/liblqr-1/default.nix
+++ b/pkgs/development/libraries/liblqr-1/default.nix
@@ -4,6 +4,8 @@ stdenv.mkDerivation rec {
   pname = "liblqr-1";
   version = "0.4.2";
 
+  outputs = [ "out" "dev" ];
+
   src = fetchFromGitHub {
     owner = "carlobaldassi";
     repo = "liblqr";