diff --git a/Telegram/Patches/gyp.diff b/Telegram/Patches/gyp.diff
index dbade720fc..a53877b252 100644
--- a/Telegram/Patches/gyp.diff
+++ b/Telegram/Patches/gyp.diff
@@ -1,8 +1,8 @@
 diff --git a/pylib/gyp/generator/cmake.py b/pylib/gyp/generator/cmake.py
-index a2b9629..ac59461 100644
+index 4a2041cf..e5333926 100644
 --- a/pylib/gyp/generator/cmake.py
 +++ b/pylib/gyp/generator/cmake.py
-@@ -1070,6 +1070,23 @@ def WriteTarget(namer, qualified_target, target_dicts, build_dir, config_to_use,
+@@ -1078,6 +1078,23 @@ def WriteTarget(namer, qualified_target, target_dicts, build_dir, config_to_use,
  
        output.write(')\n')
  
@@ -26,7 +26,7 @@ index a2b9629..ac59461 100644
    UnsetVariable(output, 'TOOLSET')
    UnsetVariable(output, 'TARGET')
  
-@@ -1112,6 +1129,8 @@ def GenerateOutputForConfig(target_list, target_dicts, data,
+@@ -1120,6 +1137,8 @@ def GenerateOutputForConfig(target_list, target_dicts, data,
    SetVariable(output, 'configuration', config_to_use)
  
    ar = None
@@ -35,7 +35,7 @@ index a2b9629..ac59461 100644
    cc = None
    cxx = None
  
-@@ -1121,17 +1140,27 @@ def GenerateOutputForConfig(target_list, target_dicts, data,
+@@ -1129,17 +1148,27 @@ def GenerateOutputForConfig(target_list, target_dicts, data,
    for key, value in make_global_settings:
      if key == 'AR':
        ar = os.path.join(build_to_top, value)
@@ -64,48 +64,63 @@ index a2b9629..ac59461 100644
      SetVariable(output, 'CMAKE_C_COMPILER', cc)
    if cxx:
 diff --git a/pylib/gyp/generator/xcode.py b/pylib/gyp/generator/xcode.py
-index db99d6a..8d56baf 100644
+index 8bc22bed..24bee427 100644
 --- a/pylib/gyp/generator/xcode.py
 +++ b/pylib/gyp/generator/xcode.py
-@@ -72,6 +72,10 @@ generator_additional_non_configuration_keys = [
+@@ -74,6 +74,12 @@ generator_additional_non_configuration_keys = [
    'ios_app_extension',
    'ios_watch_app',
    'ios_watchkit_extension',
 +
 +  'mac_sandbox', # sandbox support
 +  'mac_sandbox_development_team',
++
++  'mac_hardened_runtime', # hardened runtime support
 +
    'mac_bundle',
    'mac_bundle_resources',
    'mac_framework_headers',
-@@ -772,6 +776,26 @@ def GenerateOutput(target_list, target_dicts, data, params):
+@@ -774,6 +780,39 @@ def GenerateOutput(target_list, target_dicts, data, params):
      xcode_targets[qualified_target] = xct
      xcode_target_to_target_dict[xct] = spec
  
-+    # sandbox support
++    # sandbox and hardened runtime support
 +    is_sandbox = int(spec.get('mac_sandbox', 0))
++    is_hardened_runtime = int(spec.get('mac_hardened_runtime', 0))
++    if is_sandbox or is_hardened_runtime:
++      try:
++        tmp = pbxp._properties['attributes']['TargetAttributes']
++      except KeyError:
++        pbxp._properties['attributes']['TargetAttributes'] = {}
++      try:
++        tmp = pbxp._properties['attributes']['TargetAttributes'][xct]
++      except KeyError:
++        pbxp._properties['attributes']['TargetAttributes'][xct] = {}
++      try:
++        tmp = pbxp._properties['attributes']['TargetAttributes'][xct]['SystemCapabilities']
++      except KeyError:
++        pbxp._properties['attributes']['TargetAttributes'][xct]['SystemCapabilities'] = {}
++
 +    if is_sandbox:
 +      dev_team = spec.get('mac_sandbox_development_team', '%%ERROR%%')
 +      assert dev_team != '%%ERROR%%', (
 +          'mac_sandbox must be accompanied by mac_sandbox_development_team (target "%s")' %
 +          target_name)
-+      try:
-+        tmp =  pbxp._properties['attributes']['TargetAttributes']
-+      except KeyError:
-+        pbxp._properties['attributes']['TargetAttributes'] = {}
-+      pbxp._properties['attributes']['TargetAttributes'][xct] = {
-+        'DevelopmentTeam': dev_team,
-+        'SystemCapabilities': {
-+          'com.apple.Sandbox': {
-+            'enabled': 1,
-+          },
-+        },
++      pbxp._properties['attributes']['TargetAttributes'][xct]['DevelopmentTeam'] = dev_team
++      pbxp._properties['attributes']['TargetAttributes'][xct]['SystemCapabilities']['com.apple.Sandbox'] = {
++        'enabled': 1,
++      }
++
++    # hardened runtime support
++    if is_hardened_runtime:
++      pbxp._properties['attributes']['TargetAttributes'][xct]['SystemCapabilities']['com.apple.HardenedRuntime'] = {
++        'enabled': 1,
 +      }
 +
      spec_actions = spec.get('actions', [])
      spec_rules = spec.get('rules', [])
  
-@@ -1141,7 +1165,8 @@ exit 1
+@@ -1132,7 +1171,8 @@ exit 1
          groups = [x for x in groups if not x.endswith('_excluded')]
        for group in groups:
          for item in rule.get(group, []):
diff --git a/Telegram/Telegram/Telegram.entitlements b/Telegram/Telegram/Telegram.entitlements
new file mode 100644
index 0000000000..b572d9c04e
--- /dev/null
+++ b/Telegram/Telegram/Telegram.entitlements
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.device.audio-input</key>
+	<true/>
+</dict>
+</plist>
diff --git a/Telegram/build/build.sh b/Telegram/build/build.sh
index 3fb5709dcd..129a260624 100755
--- a/Telegram/build/build.sh
+++ b/Telegram/build/build.sh
@@ -291,7 +291,7 @@ if [ "$BuildTarget" == "mac" ] || [ "$BuildTarget" == "mac32" ] || [ "$BuildTarg
 
   echo "Signing the application.."
   if [ "$BuildTarget" == "mac" ] || [ "$BuildTarget" == "mac32" ]; then
-    codesign --force --deep --sign "Developer ID Application: John Preston" "$ReleasePath/$BinaryName.app"
+    codesign --force --deep --timestamp --options runtime --sign "Developer ID Application: John Preston" "$ReleasePath/$BinaryName.app" --entitlements "$HomePath/Telegram/Telegram.entitlements"
   elif [ "$BuildTarget" == "macstore" ]; then
     codesign --force --deep --sign "3rd Party Mac Developer Application: TELEGRAM MESSENGER LLP (6N38VWS5BX)" "$ReleasePath/$BinaryName.app" --entitlements "$HomePath/Telegram/Telegram Desktop.entitlements"
     echo "Making an installer.."
diff --git a/Telegram/gyp/Telegram.gyp b/Telegram/gyp/Telegram.gyp
index ac7696e1dc..e329d06d96 100644
--- a/Telegram/gyp/Telegram.gyp
+++ b/Telegram/gyp/Telegram.gyp
@@ -134,11 +134,18 @@
           'utils.gyp:Packer',
         ],
       }], [ 'build_mac', {
+        'mac_hardened_runtime': 1,
         'mac_bundle': '1',
         'mac_bundle_resources': [
           '<!@(python -c "for s in \'<@(langpacks)\'.split(\' \'): print(\'<(res_loc)/langs/\' + s + \'.lproj/Localizable.strings\')")',
           '../Telegram/Images.xcassets',
         ],
+        'xcode_settings': {
+          'ENABLE_HARDENED_RUNTIME': 'YES',
+        },
+        'sources': [
+          '../Telegram/Telegram.entitlements',
+        ],
       }], [ 'build_macstore', {
         'mac_sandbox': 1,
         'mac_sandbox_development_team': '6N38VWS5BX',