diff --git a/kotlin-native/README.md b/kotlin-native/README.md
index d890b7362fe..6eca020325f 100644
--- a/kotlin-native/README.md
+++ b/kotlin-native/README.md
@@ -27,7 +27,7 @@ More information can be found in the overviews of
 [Kotlin/Native](https://kotlinlang.org/docs/native-overview.html)
 and [Kotlin Multiplatform](https://kotlinlang.org/docs/multiplatform.html).
 
-On macOS Kotlin/Native requires Xcode 11 or newer.
+On macOS Kotlin/Native requires Xcode 12.5 or newer.
 
 ## Building from source
 
@@ -35,7 +35,7 @@ Prerequisites:
 *   configure Kotlin build as [specified in main readme](../ReadMe.md#build-environment-requirements)
 *   at the root directory of the repository,
     create `local.properties` file with `kotlin.native.enabled=true` line
-*   on macOS install Xcode 12 or newer
+*   on macOS install Xcode 12.5 or newer
 *   on Fedora 26+ ```yum install ncurses-compat-libs``` may be needed
 *   on recent Ubuntu ```apt install libncurses5``` is needed
 
diff --git a/kotlin-native/konan/konan.properties b/kotlin-native/konan/konan.properties
index 920128b6142..6e2670dc129 100644
--- a/kotlin-native/konan/konan.properties
+++ b/kotlin-native/konan/konan.properties
@@ -26,7 +26,7 @@ airplaneMode = false
 # if true, ignores Xcode version check.
 ignoreXcodeVersionCheck = false
 
-minimalXcodeVersion=11.0
+minimalXcodeVersion=12.5
 
 downloadingAttempts = 10
 downloadingAttemptIntervalMs = 3000
@@ -99,14 +99,14 @@ optInCacheableTargets = \
 # Mac OS X.
 # Can be an absolute path instead of predefined value.
 llvmHome.macos_x64 = $llvm.macos_x64.dev
-targetToolchain.macos_x64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64 = target-toolchain-xcode_12_5
 libffiDir.macos_x64 = libffi-3.2.1-3-darwin-macos
-additionalToolsDir.macos_x64 = xcode-addon-xcode_12_2-macos_x64
+additionalToolsDir.macos_x64 = xcode-addon-xcode_12_5
 
-targetToolchain.macos_arm64-macos_x64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_arm64-macos_x64 = target-toolchain-xcode_12_5
 
 targetTriple.macos_x64 = x86_64-apple-macos
-targetSysRoot.macos_x64 = target-sysroot-xcode_12_2-macos_x64
+targetSysRoot.macos_x64 = target-sysroot-xcode_12_5-macosx
 targetCpu.macos_x64 = core2
 clangFlags.macos_x64 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.macos_x64 = -O1
@@ -126,24 +126,24 @@ runtimeDefinitions.macos_x64 = KONAN_OSX=1 KONAN_MACOSX=1 KONAN_X64=1 KONAN_OBJC
 dependencies.macos_x64 = \
     lldb-4-macos
 
-target-sysroot-xcode_12_2-macos_x64.default = \
+target-sysroot-xcode_12_5-macosx.default = \
   remote:internal
 
-target-toolchain-xcode_12_2-macos_x64.default = \
+target-toolchain-xcode_12_5.default = \
   remote:internal
 
-xcode-addon-xcode_12_2-macos_x64.default = \
+xcode-addon-xcode_12_5.default = \
   remote:internal
 
 # macOS Apple Silicon
 llvmHome.macos_arm64 = $llvm.macos_arm64.dev
-targetToolchain.macos_arm64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_arm64 = target-toolchain-xcode_12_5
 libffiDir.macos_arm64 = libffi-3.3-1-macos-arm64
-additionalToolsDir.macos_arm64 = xcode-addon-xcode_12_2-macos_x64
+additionalToolsDir.macos_arm64 = xcode-addon-xcode_12_5
 
-targetToolchain.macos_x64-macos_arm64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-macos_arm64 = target-toolchain-xcode_12_5
 targetTriple.macos_arm64 = arm64-apple-macos
-targetSysRoot.macos_arm64 = target-sysroot-xcode_12_2-macos_x64
+targetSysRoot.macos_arm64 = target-sysroot-xcode_12_5-macosx
 # TODO: Check Clang behaviour.
 targetCpu.macos_arm64 = cyclone
 clangFlags.macos_arm64 = -cc1 -emit-obj -disable-llvm-passes -x ir
@@ -167,25 +167,25 @@ dependencies.macos_arm64 = \
     lldb-4-macos
 
 
-target-sysroot-xcode_12_2-macos_arm64.default = \
+target-sysroot-xcode_12_5-macos_arm64.default = \
   remote:internal
 
-target-toolchain-xcode_12_2-macos_arm64.default = \
+target-toolchain-xcode_12_5-macos_arm64.default = \
   remote:internal
 
-xcode-addon-xcode_12_2-macos_arm64.default = \
+xcode-addon-xcode_12_5-macos_arm64.default = \
   remote:internal
 
 # Apple's 32-bit iOS.
-targetToolchain.macos_x64-ios_arm32 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-ios_arm32 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-ios_arm32 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-ios_arm32 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-ios_arm32.default = \
+target-sysroot-xcode_12_5-ios_arm32.default = \
   remote:internal
 
 targetTriple.ios_arm32 = armv7-apple-ios
 # Shared with 64-bit version.
-targetSysRoot.ios_arm32 = target-sysroot-xcode_12_2-ios_arm64
+targetSysRoot.ios_arm32 = target-sysroot-xcode_12_5-iphoneos
 targetCpu.ios_arm32 = generic
 clangFlags.ios_arm32 = -cc1 -emit-obj -disable-llvm-optzns -x ir
 clangNooptFlags.ios_arm32 = -O1
@@ -208,14 +208,14 @@ runtimeDefinitions.ios_arm32 = KONAN_OBJC_INTEROP=1 KONAN_IOS KONAN_ARM32=1 \
   KONAN_NO_64BIT_ATOMIC=1 KONAN_NO_UNALIGNED_ACCESS=1
 
 # Apple's 64-bit iOS.
-targetToolchain.macos_x64-ios_arm64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-ios_arm64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-ios_arm64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-ios_arm64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-ios_arm64.default = \
+target-sysroot-xcode_12_5-iphoneos.default = \
   remote:internal
 
 targetTriple.ios_arm64 = arm64-apple-ios
-targetSysRoot.ios_arm64 = target-sysroot-xcode_12_2-ios_arm64
+targetSysRoot.ios_arm64 = target-sysroot-xcode_12_5-iphoneos
 targetCpu.ios_arm64 = cyclone
 clangFlags.ios_arm64 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.ios_arm64 = -O1
@@ -237,14 +237,14 @@ runtimeDefinitions.ios_arm64 = KONAN_OBJC_INTEROP=1 KONAN_IOS=1 KONAN_ARM64=1 \
 additionalCacheFlags.ios_arm64 = -Xembed-bitcode-marker
 
 #  Apple's iOS simulator.
-targetToolchain.macos_x64-ios_x64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-ios_x64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-ios_x64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-ios_x64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-ios_x64.default = \
+target-sysroot-xcode_12_5-iphonesimulator.default = \
   remote:internal
 
 targetTriple.ios_x64 = x86_64-apple-ios-simulator
-targetSysRoot.ios_x64 = target-sysroot-xcode_12_2-ios_x64
+targetSysRoot.ios_x64 = target-sysroot-xcode_12_5-iphonesimulator
 targetCpu.ios_x64 = core2
 clangFlags.ios_x64 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.ios_x64 = -O1
@@ -263,14 +263,14 @@ runtimeDefinitions.ios_x64 = KONAN_OBJC_INTEROP=1 KONAN_IOS=1 KONAN_X64=1 \
 
 # iOS simulator on Apple Silicon
 
-targetToolchain.macos_x64-ios_simulator_arm64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-ios_simulator_arm64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-ios_simulator_arm64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-ios_simulator_arm64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-ios_simulator_arm64.default = \
+target-sysroot-xcode_12_5-ios_simulator_arm64.default = \
   remote:internal
 
 targetTriple.ios_simulator_arm64 = arm64-apple-ios-simulator
-targetSysRoot.ios_simulator_arm64 = target-sysroot-xcode_12_2-ios_x64
+targetSysRoot.ios_simulator_arm64 = target-sysroot-xcode_12_5-iphonesimulator
 targetCpu.ios_simulator_arm64 = cyclone
 clangFlags.ios_simulator_arm64 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.ios_simulator_arm64 = -O1
@@ -288,14 +288,14 @@ runtimeDefinitions.ios_simulator_arm64 = KONAN_OBJC_INTEROP=1 KONAN_IOS=1 KONAN_
   KONAN_CORE_SYMBOLICATION=1
 
 #  Apple's tvOS simulator.
-targetToolchain.macos_x64-tvos_x64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-tvos_x64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-tvos_x64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-tvos_x64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-tvos_x64.default = \
+target-sysroot-xcode_12_5-appletvsimulator.default = \
   remote:internal
 
 targetTriple.tvos_x64 = x86_64-apple-tvos-simulator
-targetSysRoot.tvos_x64 = target-sysroot-xcode_12_2-tvos_x64
+targetSysRoot.tvos_x64 = target-sysroot-xcode_12_5-appletvsimulator
 targetCpu.tvos_x64 = core2
 clangFlags.tvos_x64 = -cc1 -emit-obj -disable-llvm-passes -x ir -target-cpu $targetCpu.tvos_x64
 clangNooptFlags.tvos_x64 = -O1
@@ -313,14 +313,14 @@ runtimeDefinitions.tvos_x64 = KONAN_OBJC_INTEROP=1 KONAN_TVOS=1 KONAN_X64=1 \
   KONAN_CORE_SYMBOLICATION=1
 
 #  Apple's tvOS simulator.
-targetToolchain.macos_x64-tvos_simulator_arm64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-tvos_simulator_arm64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-tvos_simulator_arm64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-tvos_simulator_arm64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-tvos_simulator_arm64.default = \
+target-sysroot-xcode_12_5-tvos_simulator_arm64.default = \
   remote:internal
 
 targetTriple.tvos_simulator_arm64 = arm64-apple-tvos-simulator
-targetSysRoot.tvos_simulator_arm64 = target-sysroot-xcode_12_2-tvos_x64
+targetSysRoot.tvos_simulator_arm64 = target-sysroot-xcode_12_5-appletvsimulator
 targetCpu.tvos_simulator_arm64 = cyclone
 clangFlags.tvos_simulator_arm64 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.tvos_simulator_arm64 = -O1
@@ -338,14 +338,14 @@ runtimeDefinitions.tvos_simulator_arm64 = KONAN_OBJC_INTEROP=1 KONAN_TVOS=1 KONA
   KONAN_CORE_SYMBOLICATION=1
 
 # Apple's 64-bit tvOS.
-targetToolchain.macos_x64-tvos_arm64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-tvos_arm64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-tvos_arm64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-tvos_arm64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-tvos_arm64.default = \
+target-sysroot-xcode_12_5-appletvos.default = \
   remote:internal
 
 targetTriple.tvos_arm64 = arm64-apple-tvos
-targetSysRoot.tvos_arm64 = target-sysroot-xcode_12_2-tvos_arm64
+targetSysRoot.tvos_arm64 = target-sysroot-xcode_12_5-appletvos
 targetCpu.tvos_arm64 = cyclone
 clangFlags.tvos_arm64 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.tvos_arm64 = -O1
@@ -363,14 +363,14 @@ runtimeDefinitions.tvos_arm64 = KONAN_OBJC_INTEROP=1 KONAN_TVOS=1 KONAN_ARM64=1
   KONAN_REPORT_BACKTRACE_TO_IOS_CRASH_LOG=1 MACHSIZE=64
 
 # watchOS armv7k
-targetToolchain.macos_x64-watchos_arm32 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-watchos_arm32 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-watchos_arm32 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-watchos_arm32 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-watchos_arm32.default = \
+target-sysroot-xcode_12_5-watchos.default = \
   remote:internal
 
 targetTriple.watchos_arm32 = armv7k-apple-watchos
-targetSysRoot.watchos_arm32 = target-sysroot-xcode_12_2-watchos_arm32
+targetSysRoot.watchos_arm32 = target-sysroot-xcode_12_5-watchos
 targetCpu.watchos_arm32 = cortex-a7
 clangFlags.watchos_arm32 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.watchos_arm32 = -O1
@@ -390,14 +390,11 @@ runtimeDefinitions.watchos_arm32 = KONAN_OBJC_INTEROP=1 KONAN_WATCHOS KONAN_ARM3
   MACHSIZE=32 KONAN_NO_64BIT_ATOMIC=1 KONAN_NO_UNALIGNED_ACCESS=1
 
 # watchOS arm64_32
-targetToolchain.macos_x64-watchos_arm64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-watchos_arm64 = target-toolchain-xcode_12_2-macos_x64
-
-target-sysroot-xcode_12_2-watchos_arm64.default = \
-  remote:internal
+targetToolchain.macos_x64-watchos_arm64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-watchos_arm64 = target-toolchain-xcode_12_5
 
 targetTriple.watchos_arm64 = arm64_32-apple-watchos
-targetSysRoot.watchos_arm64 = target-sysroot-xcode_12_2-watchos_arm32
+targetSysRoot.watchos_arm64 = target-sysroot-xcode_12_5-watchos
 targetCpu.watchos_arm64 = cortex-a7
 clangFlags.watchos_arm64 = -cc1 -emit-obj -disable-llvm-passes -x ir -mllvm -aarch64-watch-bitcode-compatibility \
   -mllvm -arm-bitcode-compatibility -mllvm -fast-isel=false -mllvm -global-isel=false
@@ -418,14 +415,14 @@ runtimeDefinitions.watchos_arm64 = KONAN_OBJC_INTEROP=1 KONAN_WATCHOS KONAN_ARM3
   MACHSIZE=32 KONAN_NO_64BIT_ATOMIC=1 KONAN_NO_UNALIGNED_ACCESS=1
 
 #  Apple's watchOS i386 simulator.
-targetToolchain.macos_x64-watchos_x86 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-watchos_x86 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-watchos_x86 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-watchos_x86 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-watchos_x86.default = \
+target-sysroot-xcode_12_5-watchsimulator.default = \
   remote:internal
 
 targetTriple.watchos_x86 = i386-apple-watchos-simulator
-targetSysRoot.watchos_x86 = target-sysroot-xcode_12_2-watchos_x86
+targetSysRoot.watchos_x86 = target-sysroot-xcode_12_5-watchsimulator
 # -target-cpu pentium4 makes sure that code-generator knows which CPU flavour to emit code for.
 # Can be seen on optimized build and FP tests, where value is passed on stack
 # by Kotlin and taken from SSE registers by C code.
@@ -447,14 +444,14 @@ runtimeDefinitions.watchos_x86 = KONAN_OBJC_INTEROP=1 KONAN_WATCHOS=1 KONAN_NO_6
   KONAN_X86=1 KONAN_CORE_SYMBOLICATION=1
 
 # watchOS x86_64 simulator.
-targetToolchain.macos_x64-watchos_x64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-watchos_x64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-watchos_x64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-watchos_x64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-watchos_x64.default = \
+target-sysroot-xcode_12_5-watchos_x64.default = \
   remote:internal
 
 targetTriple.watchos_x64 = x86_64-apple-watchos-simulator
-targetSysRoot.watchos_x64 = target-sysroot-xcode_12_2-watchos_x86
+targetSysRoot.watchos_x64 = target-sysroot-xcode_12_5-watchsimulator
 targetCpu.watchos_x64 = core2
 clangFlags.watchos_x64 = -cc1 -emit-obj -disable-llvm-passes -x ir -target-cpu $targetCpu.watchos_x64
 clangNooptFlags.watchos_x64 = -O1
@@ -472,14 +469,14 @@ runtimeDefinitions.watchos_x64 = KONAN_OBJC_INTEROP=1 KONAN_WATCHOS=1 \
   KONAN_X64=1 KONAN_CORE_SYMBOLICATION=1
 
 # watchOS Apple Silicon simulator.
-targetToolchain.macos_x64-watchos_simulator_arm64 = target-toolchain-xcode_12_2-macos_x64
-targetToolchain.macos_arm64-watchos_simulator_arm64 = target-toolchain-xcode_12_2-macos_x64
+targetToolchain.macos_x64-watchos_simulator_arm64 = target-toolchain-xcode_12_5
+targetToolchain.macos_arm64-watchos_simulator_arm64 = target-toolchain-xcode_12_5
 
-target-sysroot-xcode_12_2-watchos_simulator_arm64.default = \
+target-sysroot-xcode_12_5-watchos_simulator_arm64.default = \
   remote:internal
 
 targetTriple.watchos_simulator_arm64 = arm64-apple-watchos-simulator
-targetSysRoot.watchos_simulator_arm64 = target-sysroot-xcode_12_2-watchos_x86
+targetSysRoot.watchos_simulator_arm64 = target-sysroot-xcode_12_5-watchsimulator
 targetCpu.watchos_simulator_arm64 = cyclone
 clangFlags.watchos_simulator_arm64 = -cc1 -emit-obj -disable-llvm-passes -x ir
 clangNooptFlags.watchos_simulator_arm64 = -O1
diff --git a/kotlin-native/tools/scripts/update_xcode.sh b/kotlin-native/tools/scripts/update_xcode.sh
index 5952c7fe634..c1cc248dc2f 100755
--- a/kotlin-native/tools/scripts/update_xcode.sh
+++ b/kotlin-native/tools/scripts/update_xcode.sh
@@ -2,17 +2,17 @@
 set -e
 
 # "brew install coreutils" for grealpath.
-KONAN_TOOLCHAIN_VERSION=xcode_12_2
+KONAN_TOOLCHAIN_VERSION=xcode_12_5
 SDKS="macosx iphoneos iphonesimulator appletvos appletvsimulator watchos watchsimulator"
-TARBALL_macosx=target-sysroot-$KONAN_TOOLCHAIN_VERSION-macos_x64
-TARBALL_iphoneos=target-sysroot-$KONAN_TOOLCHAIN_VERSION-ios_arm64
-TARBALL_iphonesimulator=target-sysroot-$KONAN_TOOLCHAIN_VERSION-ios_x64
-TARBALL_appletvos=target-sysroot-$KONAN_TOOLCHAIN_VERSION-tvos_arm64
-TARBALL_appletvsimulator=target-sysroot-$KONAN_TOOLCHAIN_VERSION-tvos_x64
-TARBALL_watchos=target-sysroot-$KONAN_TOOLCHAIN_VERSION-watchos_arm32
-TARBALL_watchsimulator=target-sysroot-$KONAN_TOOLCHAIN_VERSION-watchos_x86
-TARBALL_xcode=target-toolchain-$KONAN_TOOLCHAIN_VERSION-macos_x64
-TARBALL_xcode_addon=xcode-addon-$KONAN_TOOLCHAIN_VERSION-macos_x64
+TARBALL_macosx=target-sysroot-$KONAN_TOOLCHAIN_VERSION-macosx
+TARBALL_iphoneos=target-sysroot-$KONAN_TOOLCHAIN_VERSION-iphoneos
+TARBALL_iphonesimulator=target-sysroot-$KONAN_TOOLCHAIN_VERSION-iphonesimulator
+TARBALL_appletvos=target-sysroot-$KONAN_TOOLCHAIN_VERSION-appletvos
+TARBALL_appletvsimulator=target-sysroot-$KONAN_TOOLCHAIN_VERSION-appletvsimulator
+TARBALL_watchos=target-sysroot-$KONAN_TOOLCHAIN_VERSION-watchos
+TARBALL_watchsimulator=target-sysroot-$KONAN_TOOLCHAIN_VERSION-watchsimulator
+TARBALL_xcode=target-toolchain-$KONAN_TOOLCHAIN_VERSION
+TARBALL_xcode_addon=xcode-addon-$KONAN_TOOLCHAIN_VERSION
 OUT=`pwd`
 
 for s in $SDKS; do