diff --git a/docs/changes.txt b/docs/changes.txt
index 80626475b..5c8f078eb 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -28,6 +28,8 @@
 - Tuning Database: Added a warning if a module implements module_extra_tuningdb_block but the installed computing device is not found
 - Usage Screen: On windows console, wait for any keypress if usage_mini_print() is used
 - User Options: Add new module function module_hash_decode_postprocess() to override hash specific configurations from command line
+- OpenCL Runtime: Added support to use Apple Silicon compute devices
+- OpenCL Runtime: Set default device-type to GPU with Apple Silicon compute devices
 
 * changes v6.2.4 -> v6.2.5
 
diff --git a/docs/credits.txt b/docs/credits.txt
index 002014c51..62c5b04e1 100644
--- a/docs/credits.txt
+++ b/docs/credits.txt
@@ -22,6 +22,7 @@ Gabriele "matrix" Gristina <matrix@hashcat.net> (@gm4tr1x)
 * Compressed wordlist feature
 * OpenCL Info feature
 * Apple macOS port
+* Apple Silicon support
 * Hardware monitor initial code base and maintenance
 * Test suite initial code base
 * Makefile initial code base
diff --git a/src/backend.c b/src/backend.c
index 182095f6c..05b62925c 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -341,11 +341,27 @@ static bool setup_opencl_device_types_filter (hashcat_ctx_t *hashcat_ctx, const
   {
     #if defined (__APPLE__)
 
-    // For apple use CPU only, because GPU drivers are not reliable
-    // The user can explicitly enable GPU by setting -D2
+    #include <sys/sysctl.h>
 
-    //opencl_device_types_filter = CL_DEVICE_TYPE_ALL & ~CL_DEVICE_TYPE_GPU;
-    opencl_device_types_filter = CL_DEVICE_TYPE_CPU;
+    size_t size;
+    cpu_type_t cpu_type = 0;
+    size = sizeof (cpu_type);
+    sysctlbyname ("hw.cputype", &cpu_type, &size, NULL, 0);
+
+    if (cpu_type == 0x100000c)
+    {
+      // For apple M1* use GPU only, because CPU device it is not recognized by OpenCL
+
+      opencl_device_types_filter = CL_DEVICE_TYPE_GPU;
+    }
+    else
+    {
+      // For apple use CPU only, because GPU drivers are not reliable
+      // The user can explicitly enable GPU by setting -D2
+
+      //opencl_device_types_filter = CL_DEVICE_TYPE_ALL & ~CL_DEVICE_TYPE_GPU;
+      opencl_device_types_filter = CL_DEVICE_TYPE_CPU;
+    }
 
     #else
 
@@ -5170,13 +5186,6 @@ int run_opencl_kernel_bzero (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *devi
 
   // with apple GPU clEnqueueWriteBuffer() return CL_INVALID_VALUE, workaround
 
-  if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE && \
-     (device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK || device_param->opencl_device_vendor_id == VENDOR_ID_APPLE) && \
-     device_param->opencl_device_type & CL_DEVICE_TYPE_GPU)
-  {
-    return run_opencl_kernel_memset (hashcat_ctx, device_param, buf, 0, 0, size);
-  }
-
   if (num16d)
   {
     const u64 kernel_threads = device_param->kernel_wgs_bzero;
@@ -5196,7 +5205,20 @@ int run_opencl_kernel_bzero (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *devi
 
   if (num16m)
   {
-    if (hc_clEnqueueWriteBuffer (hashcat_ctx, device_param->opencl_command_queue, buf, CL_FALSE, num16d * 16, num16m, bzeros, 0, NULL, NULL) == -1) return -1;
+    if (device_param->opencl_platform_vendor_id == VENDOR_ID_APPLE && \
+       (device_param->opencl_device_vendor_id == VENDOR_ID_INTEL_SDK || device_param->opencl_device_vendor_id == VENDOR_ID_APPLE) && \
+       device_param->opencl_device_type & CL_DEVICE_TYPE_GPU)
+    {
+      u8 *bzeros_apple = (u8 *) hccalloc (num16m, sizeof (u8));
+
+      if (hc_clEnqueueWriteBuffer (hashcat_ctx, device_param->opencl_command_queue, buf, CL_TRUE, num16d * 16, num16m, bzeros_apple, 0, NULL, NULL) == -1) return -1;
+
+      hcfree (bzeros_apple);
+    }
+    else
+    {
+      if (hc_clEnqueueWriteBuffer (hashcat_ctx, device_param->opencl_command_queue, buf, CL_FALSE, num16d * 16, num16m, bzeros, 0, NULL, NULL) == -1) return -1;
+    }
   }
 
   return 0;
@@ -10535,7 +10557,7 @@ static bool load_kernel (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *device_p
 
       // workaround opencl issue with Apple Silicon
 
-      if (strcmp (device_param->device_name, "Apple M") != 0)
+      if (strncmp (device_param->device_name, "Apple M", 7) == 0)
       {
         if (hc_clCreateProgramWithSource (hashcat_ctx, device_param->opencl_context, 1, (const char **) kernel_sources, NULL, opencl_program) == -1) return false;
 
@@ -10562,7 +10584,7 @@ static bool load_kernel (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *device_p
 
         int rc_clGetProgramBuildInfo;
 
-        if (strcmp (device_param->device_name, "Apple M") != 0)
+        if (strncmp (device_param->device_name, "Apple M", 7) == 0)
         {
           rc_clGetProgramBuildInfo = hc_clGetProgramBuildInfo (hashcat_ctx, *opencl_program, device_param->opencl_device, CL_PROGRAM_BUILD_LOG, build_log_size, build_log, NULL);
         }
@@ -10589,10 +10611,7 @@ static bool load_kernel (hashcat_ctx_t *hashcat_ctx, hc_device_param_t *device_p
 
       // workaround opencl issue with Apple Silicon
 
-      if (strcmp (device_param->device_name, "Apple M") != 0)
-      {
-      }
-      else
+      if (strncmp (device_param->device_name, "Apple M", 7) != 0)
       {
         cl_program t2[1];