diff --git a/nlohmann-json/alr.sh b/nlohmann-json/alr.sh
index 7e68783..b8b3c2f 100644
--- a/nlohmann-json/alr.sh
+++ b/nlohmann-json/alr.sh
@@ -1,5 +1,5 @@
 name='nlohmann-json'
-version='3.11.3'
+version='3.12.0'
 release='1'
 desc='Header-only JSON library for Modern C++'
 homepage='https://github.com/nlohmann/json'
@@ -14,21 +14,28 @@ sources=("git+https://github.com/nlohmann/json.git#tag=v${version}")
 checksums=('SKIP')
 
 build() {
-    cd "${srcdir}"
-    mkdir build
-    cd ./build
-    cmake ../json -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=OFF
-    make -j$(nproc)
+  cd "${srcdir}"
+  mkdir build
+  cd ./build
+  cmake ../json -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=OFF
+  make -j$(($(nproc) - 1))
 }
 
 check() {
-    cd "${srcdir}/build"
-    cmake ../json -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=ON
-    make -j$(nproc)
-    ctest --output-on-failure
+  cd "${srcdir}/build"
+  cmake ../json -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_LIBDIR=lib -DCMAKE_INSTALL_PREFIX=/usr -DBUILD_TESTING=ON
+  make -j$(($(nproc) - 1))
+  ctest --output-on-failure
 }
 
 package() {
-    cd "${srcdir}/build"
-    make "DESTDIR=${pkgdir}" install
+  cd "${srcdir}/build"
+  make "DESTDIR=${pkgdir}" install
 }
+
+files() {
+  printf '"%s" ' ./usr/include/nlohmann/detail/**/*
+  printf '"%s" ' ./usr/include/nlohmann/thirdparty/hedley/*
+  printf '"%s" ' ./usr/share/cmake/nlohmann_json/*
+  echo ./usr/share/pkgconfig/nlohmann_json.pc
+}
\ No newline at end of file