diff --git a/build.py b/build.py
index 849abc7b0..2024e8c46 100755
--- a/build.py
+++ b/build.py
@@ -405,7 +405,7 @@ def cleanup(args):
 def setup_ndk(args):
     os_name = platform.system().lower()
     ndk_ver = config['ndkVersion']
-    url = f'https://dl.google.com/android/repository/android-ndk-r{ndk_ver}-{os_name}-x86_64.zip'
+    url = f'https://dl.google.com/android/repository/android-ndk-r{ndk_ver}-{os_name}.zip'
     ndk_zip = url.split('/')[-1]
 
     header(f'* Downloading {ndk_zip}')
@@ -417,7 +417,7 @@ def setup_ndk(args):
     with zipfile.ZipFile(ndk_zip, 'r') as zf:
         for info in zf.infolist():
             vprint(f'Extracting {info.filename}')
-            if info.external_attr == 2716663808:  # symlink
+            if info.external_attr >> 28 == 0xA:  # symlink
                 src = zf.read(info).decode("utf-8")
                 dest = op.join(ndk_root, info.filename)
                 os.symlink(src, dest)
diff --git a/gradle.properties b/gradle.properties
index ed0d8164c..82ea5e669 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -29,5 +29,5 @@ android.nonTransitiveRClass=true
 # Magisk
 magisk.stubVersion=24
 magisk.versionCode=24101
-magisk.ndkVersion=21e
-magisk.fullNdkVersion=21.4.7075529
+magisk.ndkVersion=23b
+magisk.fullNdkVersion=23.1.7779620
diff --git a/native/jni/Application.mk b/native/jni/Application.mk
index c772cbe69..e06a38703 100644
--- a/native/jni/Application.mk
+++ b/native/jni/Application.mk
@@ -1,15 +1,18 @@
 APP_ABI          := armeabi-v7a arm64-v8a x86 x86_64
 APP_CFLAGS       := -Wall -Oz -fomit-frame-pointer -flto
 APP_LDFLAGS      := -flto
-APP_CPPFLAGS     := -std=c++17
+APP_CPPFLAGS     := -std=c++20
 APP_STL          := none
 APP_PLATFORM     := android-21
 APP_THIN_ARCHIVE := true
 APP_STRIP_MODE   := --strip-all
 
+ifndef B_SHARED
+# Fix static variables' ctor/dtor when using LTO
+# See: https://github.com/android/ndk/issues/1461
+APP_LDFLAGS      += -T jni/lto_fix.lds
 ifneq ($(TARGET_ARCH),arm64)
 ifneq ($(TARGET_ARCH),x86_64)
-ifndef B_SHARED
 # Disable fortify on static 32-bit targets
 APP_CFLAGS       += -D_FORTIFY_SOURCE=0 -Wno-macro-redefined
 endif
@@ -18,7 +21,7 @@ endif
 
 # Busybox should use stock libc.a
 ifdef B_BB
-APP_PLATFORM     := android-22
+APP_PLATFORM     := android-24
 ifeq ($(OS),Windows_NT)
 APP_SHORT_COMMANDS := true
 endif
diff --git a/native/jni/external/busybox b/native/jni/external/busybox
index c4f0c98ae..e68ef0927 160000
--- a/native/jni/external/busybox
+++ b/native/jni/external/busybox
@@ -1 +1 @@
-Subproject commit c4f0c98aeb9902aff5104a7519261022709d26a5
+Subproject commit e68ef0927385fb72a3fd414e206f915f4517b79f
diff --git a/native/jni/external/libcxx b/native/jni/external/libcxx
index b74fd5905..0aa67c3ff 160000
--- a/native/jni/external/libcxx
+++ b/native/jni/external/libcxx
@@ -1 +1 @@
-Subproject commit b74fd5905f1064c1a33b213fca58b45441651ad1
+Subproject commit 0aa67c3ffea069bdb58fe3b5e7aad06934afb292
diff --git a/native/jni/external/systemproperties/prop_area.cpp b/native/jni/external/systemproperties/prop_area.cpp
index 77722bb08..36eac7fb9 100644
--- a/native/jni/external/systemproperties/prop_area.cpp
+++ b/native/jni/external/systemproperties/prop_area.cpp
@@ -384,21 +384,21 @@ bool prop_area::prune_node(prop_bt * const node) {
   bool is_leaf = true;
   if (atomic_load_explicit(&node->children, memory_order_relaxed) != 0) {
     if (prune_node(to_prop_bt(&node->children))) {
-      atomic_store_explicit(&node->children, 0, memory_order_release);
+      atomic_store_explicit(&node->children, 0u, memory_order_release);
     } else {
       is_leaf = false;
     }
   }
   if (atomic_load_explicit(&node->left, memory_order_relaxed) != 0) {
     if (prune_node(to_prop_bt(&node->left))) {
-      atomic_store_explicit(&node->left, 0, memory_order_release);
+      atomic_store_explicit(&node->left, 0u, memory_order_release);
     } else {
       is_leaf = false;
     }
   }
   if (atomic_load_explicit(&node->right, memory_order_relaxed) != 0) {
     if (prune_node(to_prop_bt(&node->right))) {
-      atomic_store_explicit(&node->right, 0, memory_order_release);
+      atomic_store_explicit(&node->right, 0u, memory_order_release);
     } else {
       is_leaf = false;
     }
@@ -425,7 +425,7 @@ bool prop_area::rm(const char *name, bool trim_node) {
   }
 
   // De-reference the existing property ASAP
-  atomic_store_explicit(&node->prop, 0, memory_order_release);
+  atomic_store_explicit(&node->prop, 0u, memory_order_release);
 
   if (info) {
     // Wipe out the old info
diff --git a/native/jni/init/twostage.cpp b/native/jni/init/twostage.cpp
index ad8db1aef..1863378ee 100644
--- a/native/jni/init/twostage.cpp
+++ b/native/jni/init/twostage.cpp
@@ -1,11 +1,3 @@
-// Force using legacy_signal_inlines.h
-#define __ANDROID_API_BACKUP__  __ANDROID_API__
-#undef  __ANDROID_API__
-#define __ANDROID_API__ 20
-#include <android/legacy_signal_inlines.h>
-#undef  __ANDROID_API__
-#define __ANDROID_API__ __ANDROID_API_BACKUP__
-
 #include <sys/mount.h>
 #include <map>
 #include <set>
diff --git a/native/jni/lto_fix.lds b/native/jni/lto_fix.lds
new file mode 100644
index 000000000..7f329730f
--- /dev/null
+++ b/native/jni/lto_fix.lds
@@ -0,0 +1,12 @@
+SECTIONS {
+  .init_array : {
+    *(SORT_BY_INIT_PRIORITY(.init_array.*))
+    *(EXCLUDE_FILE(*crtend_android.o) .init_array)
+  }
+} INSERT AFTER .fini_array;
+SECTIONS {
+  .fini_array : {
+    *(SORT_BY_INIT_PRIORITY(.fini_array.*))
+    *(EXCLUDE_FILE(*crtend_android.o) .fini_array)
+  }
+} INSERT BEFORE .init_array;
diff --git a/native/jni/utils/misc.hpp b/native/jni/utils/misc.hpp
index 9e1916ec4..de422af63 100644
--- a/native/jni/utils/misc.hpp
+++ b/native/jni/utils/misc.hpp
@@ -175,8 +175,8 @@ template <class ...Args>
 void exec_command_async(Args &&...args) {
     const char *argv[] = {args..., nullptr};
     exec_t exec {
+        .fork = fork_dont_care,
         .argv = argv,
-        .fork = fork_dont_care
     };
     exec_command(exec);
 }
diff --git a/native/jni/utils/missing.cpp b/native/jni/utils/missing.cpp
index 41f3d1e8f..c4c11156f 100644
--- a/native/jni/utils/missing.cpp
+++ b/native/jni/utils/missing.cpp
@@ -10,8 +10,8 @@
 
 extern "C" {
 
-/* Original source: https://github.com/freebsd/freebsd/blob/master/contrib/file/src/getline.c
- * License: BSD, full copyright notice please check original source */
+// Original source: https://github.com/freebsd/freebsd/blob/master/contrib/file/src/getline.c
+// License: BSD, full copyright notice please check original source
 
 ssize_t getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp) {
     char *ptr, *eptr;
@@ -53,8 +53,8 @@ ssize_t getline(char **buf, size_t *bufsiz, FILE *fp) {
     return getdelim(buf, bufsiz, '\n', fp);
 }
 
-/* Original source: https://android.googlesource.com/platform/bionic/+/master/libc/bionic/mntent.cpp
- * License: AOSP, full copyright notice please check original source */
+// Original source: https://android.googlesource.com/platform/bionic/+/master/libc/bionic/mntent.cpp
+// License: AOSP, full copyright notice please check original source
 
 struct mntent *getmntent_r(FILE *fp, struct mntent *e, char *buf, int buf_len) {
     memset(e, 0, sizeof(*e));
@@ -143,7 +143,28 @@ int ftruncate64(int fd, off64_t length) {
 #endif
 
 #if !defined(__LP64__)
-void android_set_abort_message(const char *msg) {}
+void android_set_abort_message(const char *) {}
+
+// Original source: <android/legacy_signal_inlines.h>
+int sigaddset(sigset_t *set, int signum) {
+    /* Signal numbers start at 1, but bit positions start at 0. */
+    int bit = signum - 1;
+    auto *local_set = (unsigned long *)set;
+    if (set == nullptr || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) {
+        errno = EINVAL;
+        return -1;
+    }
+    local_set[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT);
+    return 0;
+}
+int sigemptyset(sigset_t *set) {
+    if (set == nullptr) {
+        errno = EINVAL;
+        return -1;
+    }
+    memset(set, 0, sizeof(sigset_t));
+    return 0;
+}
 #endif
 
 } // extern "C"