diff --git a/cmake/platforms/OSX.cmake b/cmake/platforms/OSX.cmake
--- a/cmake/platforms/OSX.cmake
+++ b/cmake/platforms/OSX.cmake
@@ -15,10 +15,10 @@
 set(CMAKE_CXX_COMPILER_TARGET ${TOOLCHAIN_PREFIX})
 
 set(OSX_MIN_VERSION 10.15)
-# OSX_SDK_VERSION 10.15.6
+# OSX_SDK_VERSION 11.0
 # Note: don't use XCODE_VERSION, it's a cmake built-in variable !
-set(SDK_XCODE_VERSION 12.1)
-set(SDK_XCODE_BUILD_ID 12A7403)
+set(SDK_XCODE_VERSION 12.2)
+set(SDK_XCODE_BUILD_ID 12B45b)
 set(LD64_VERSION 609)
 
 # On OSX we use various stuff from Apple's SDK.
diff --git a/contrib/devtools/symbol-check.py b/contrib/devtools/symbol-check.py
--- a/contrib/devtools/symbol-check.py
+++ b/contrib/devtools/symbol-check.py
@@ -255,7 +255,7 @@
 
 
 def check_MACHO_sdk(binary) -> bool:
-    return binary.build_version.sdk == [10, 15, 6]
+    return binary.build_version.sdk == [11, 0, 0]
 
 
 def check_PE_libraries(binary) -> bool:
diff --git a/contrib/gitian-build.py b/contrib/gitian-build.py
--- a/contrib/gitian-build.py
+++ b/contrib/gitian-build.py
@@ -558,7 +558,7 @@
 
     # Disable for MacOS if no SDK found
     if args.macos and not os.path.isfile(
-        "gitian-builder/inputs/Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz"
+        "gitian-builder/inputs/Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz"
     ):
         print("Cannot build for MacOS, SDK does not exist. Will build for other OSes")
         args.macos = False
diff --git a/contrib/gitian-descriptors/gitian-osx.yml b/contrib/gitian-descriptors/gitian-osx.yml
--- a/contrib/gitian-descriptors/gitian-osx.yml
+++ b/contrib/gitian-descriptors/gitian-osx.yml
@@ -33,7 +33,7 @@
 - "url": "https://github.com/Bitcoin-ABC/bitcoin-abc.git"
   "dir": "bitcoin"
 files:
-- "Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz"
+- "Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz"
 script: |
   WRAP_DIR=$HOME/wrapped
   HOSTS=(
@@ -95,7 +95,7 @@
   BASEPREFIX=`pwd`/depends
 
   mkdir -p ${BASEPREFIX}/SDKs
-  tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz
+  tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz
 
   # Build dependencies for each host
   for i in ${HOSTS[@]}; do
diff --git a/contrib/guix/README.md b/contrib/guix/README.md
--- a/contrib/guix/README.md
+++ b/contrib/guix/README.md
@@ -196,7 +196,7 @@
   Set the path where _extracted_ SDKs can be found. This is passed through to
   the depends tree. Note that this is should be set to the _parent_ directory of
   the actual SDK (e.g. `SDK_PATH=$HOME/Downloads/macOS-SDKs` instead of
-  `$HOME/Downloads/macOS-SDKs/Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers`).
+  `$HOME/Downloads/macOS-SDKs/Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers`).
 
   The path that this environment variable points to **must be a directory**, and
   **NOT a symlink to a directory**.
diff --git a/contrib/macdeploy/README.md b/contrib/macdeploy/README.md
--- a/contrib/macdeploy/README.md
+++ b/contrib/macdeploy/README.md
@@ -12,11 +12,16 @@
 
 ### Step 1: Obtaining `Xcode.app`
 
+A free Apple Developer Account is required to proceed.
+
 Our current macOS SDK
-(`Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz`) can be
+(`Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz`) can be
 extracted from
-[Xcode_12.1.xip](https://download.developer.apple.com/Developer_Tools/Xcode_12.1/Xcode_12.1.xip).
-An Apple ID is needed to download this.
+[Xcode_12.2.xip](https://download.developer.apple.com/Developer_Tools/Xcode_12.2/Xcode_12.2.xip).
+Alternatively, after logging in to your account go to 'Downloads', then 'More'
+and search for [`Xcode_12.2`](https://developer.apple.com/download/all/?q=Xcode%2012.2).
+An Apple ID and cookies enabled for the hostname are needed to download this.
+The `sha256sum` of the archive should be `28d352f8c14a43d9b8a082ac6338dc173cb153f964c6e8fb6ba389e5be528bd0`.
 
 After Xcode version 7.x, Apple started shipping the `Xcode.app` in a `.xip`
 archive. This makes the SDK less-trivial to extract on non-macOS machines. One
@@ -26,25 +31,25 @@
 # Install/clone tools needed for extracting Xcode.app
 apt install cpio
 
-# Unpack Xcode_12.1.xip and place the resulting Xcode.app in your current
+# Unpack Xcode_12.2.xip and place the resulting Xcode.app in your current
 # working directory
-python3 contrib/apple-sdk-tools/extract_xcode.py -f Xcode_12.1.xip | cpio -d -i
+python3 contrib/apple-sdk-tools/extract_xcode.py -f Xcode_12.2.xip | cpio -d -i
 ```
 
 On macOS the process is more straightforward:
 
 ```bash
-xip -x Xcode_12.1.xip
+xip -x Xcode_12.2.xip
 ```
 
-### Step 2: Generating `Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz` from `Xcode.app`
+### Step 2: Generating `Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz` from `Xcode.app`
 
-To generate `Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz`, run
+To generate `Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz`, run
 the script [`gen-sdk`](./gen-sdk) with the path to `Xcode.app` (extracted in the
 previous stage) as the first argument.
 
 ```bash
-# Generate a Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz from
+# Generate a Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz from
 # the supplied Xcode.app
 ./contrib/macdeploy/gen-sdk '/path/to/Xcode.app'
 ```
@@ -74,17 +79,7 @@
 and its `libLTO.so` rather than those from `llvmgcc`, as it was originally done in `toolchain4`.
 
 To complicate things further, all builds must target an Apple SDK. These SDKs are free to
-download, but not redistributable. To obtain it, register for an Apple Developer Account,
-then download [Xcode_11.3.1](https://download.developer.apple.com/Developer_Tools/Xcode_11.3.1/Xcode_11.3.1.xip).
-
-This file is many gigabytes in size, but most (but not all) of what we need is
-contained only in a single directory:
-
-```bash
-Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
-```
-
-See the SDK Extraction notes above for how to obtain it.
+download, but not redistributable. See the SDK Extraction notes above for how to obtain it.
 
 The Gitian descriptors build 2 sets of files: Linux tools, then Apple binaries which are
 created using these tools. The build process has been designed to avoid including the
diff --git a/contrib/teamcity/download-apple-sdk.sh b/contrib/teamcity/download-apple-sdk.sh
--- a/contrib/teamcity/download-apple-sdk.sh
+++ b/contrib/teamcity/download-apple-sdk.sh
@@ -21,8 +21,8 @@
 
 : "${TOPLEVEL:=$(git rev-parse --show-toplevel)}"
 
-OSX_SDK="Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz"
-OSX_SDK_SHA256="12bd3827817f0c6b305e77140f440864eab29077e0b77b6627030e241dce76a4"
+OSX_SDK="Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz"
+OSX_SDK_SHA256="5b7e65304bb9abcc2cffc8bc4dd68b8f7e318dce85c195bea77c59600e777bd3"
 
 pushd "${DEST_DIR}" > /dev/null
 if ! echo "${OSX_SDK_SHA256}  ${OSX_SDK}" | sha256sum --quiet -c > /dev/null 2>&1; then
diff --git a/depends/hosts/darwin.mk b/depends/hosts/darwin.mk
--- a/depends/hosts/darwin.mk
+++ b/depends/hosts/darwin.mk
@@ -1,7 +1,7 @@
 OSX_MIN_VERSION=10.15
-OSX_SDK_VERSION=10.15.6
-XCODE_VERSION=12.1
-XCODE_BUILD_ID=12A7403
+OSX_SDK_VERSION=11.0
+XCODE_VERSION=12.2
+XCODE_BUILD_ID=12B45b
 LD64_VERSION=609
 
 OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with-libcxx-headers
diff --git a/doc/gitian-building/gitian-building-mac-os-sdk.md b/doc/gitian-building/gitian-building-mac-os-sdk.md
--- a/doc/gitian-building/gitian-building-mac-os-sdk.md
+++ b/doc/gitian-building/gitian-building-mac-os-sdk.md
@@ -13,15 +13,15 @@
 Copy it to the Gitian VM and clean up, e.g.:
 
 ```bash
-scp Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz gitian:
-rm Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz
+scp Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz gitian:
+rm Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz
 ```
 
 Login to the VM and:
 
 ```bash
 mkdir -p gitian-builder/inputs
-mv Xcode-12.1-12A7403-extracted-SDK-with-libcxx-headers.tar.gz gitian-builder/inputs
+mv Xcode-12.2-12B45b-extracted-SDK-with-libcxx-headers.tar.gz gitian-builder/inputs
 ```
 
 Troubleshooting