diff --git a/.arclint b/.arclint
--- a/.arclint
+++ b/.arclint
@@ -5,8 +5,8 @@
         },
         "clang-format": {
             "type": "clang-format",
-            "version": ">=8.0",
-            "bin": ["clang-format-8", "clang-format"],
+            "version": ">=10.0",
+            "bin": ["clang-format-10", "clang-format"],
             "include": "(^src/.*\\.(h|c|cpp|mm)$)",
             "exclude": [
                 "(^src/(secp256k1|univalue|leveldb)/)",
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -131,27 +131,26 @@
 If code formatting tools do not install automatically on your system, you
 will have to install the following:
 
-On Ubuntu (>= 18.04+updates):
+On Ubuntu 20.04:
 ```
-sudo apt-get install clang-format-8 clang-tidy-8 clang-tools-8 cppcheck python3-autopep8 flake8 php-codesniffer yamllint
+sudo apt-get install clang-format clang-tidy clang-tools cppcheck python3-autopep8 flake8 php-codesniffer yamllint
 ```
 
-On Debian (>= 10), the clang-8 family of tools is available from the `buster-backports` repository:
+If not available in the distribution, `clang-format-10` and `clang-tidy` can be
+installed from <https://releases.llvm.org/download.html> or <https://apt.llvm.org>.
+
+On Debian (>= 10), the clang-10 family of tools is available from the https://apt.llvm.org/ repository:
 ```
-echo "deb http://deb.debian.org/debian buster-backports main" | sudo tee -a /etc/apt/sources.list
-sudo apt-get update
-sudo apt-get install cppcheck python3-autopep8 flake8 php-codesniffer mypy
-sudo apt-get -t buster-backports install clang-format-8 clang-tidy-8 clang-tools-8
+wget https://apt.llvm.org/llvm.sh
+chmod +x llvm.sh
+sudo ./llvm.sh 10
 ```
 
-If not available in the distribution, `clang-format-8` and `clang-tidy` can be
-installed from <https://releases.llvm.org/download.html> or <https://apt.llvm.org>.
-
 For example, for macOS:
 ```
-curl http://releases.llvm.org/8.0.0/clang+llvm-8.0.0-x86_64-apple-darwin.tar.xz | tar -xJv
-ln -s $PWD/clang+llvm-8.0.0-x86_64-apple-darwin/bin/clang-format /usr/local/bin/clang-format
-ln -s $PWD/clang+llvm-8.0.0-x86_64-apple-darwin/bin/clang-tidy /usr/local/bin/clang-tidy
+curl -L https://github.com/llvm/llvm-project/releases/download/llvmorg-10.0.0/clang+llvm-10.0.0-x86_64-apple-darwin.tar.xz | tar -xJv
+ln -s $PWD/clang+llvm-10.0.0-x86_64-apple-darwin/bin/clang-format /usr/local/bin/clang-format
+ln -s $PWD/clang+llvm-10.0.0-x86_64-apple-darwin/bin/clang-tidy /usr/local/bin/clang-tidy
 ```
 
 If you are modifying a python script, you will need to install `mypy`. The minimum required version is 0.780, because
diff --git a/arcanist/linter/ClangFormatLinter.php b/arcanist/linter/ClangFormatLinter.php
--- a/arcanist/linter/ClangFormatLinter.php
+++ b/arcanist/linter/ClangFormatLinter.php
@@ -46,13 +46,13 @@
     }
 
     /*
-     * FIXME: This is a hack to only allow for clang-format version 8.x.
+     * FIXME: This is a hack to only allow for clang-format version 10.x.
      * The .arclint `version` field only allow to filter versions using `=`,
      * `>`, `<`, `>=` or `<=`. There is no facility to define that the required
-     * version should be >= 8.0 and < 9.0.
+     * version should be >= 10.0 and < 11.0.
      */
-    if ($version[0] != '8') {
-      throw new Exception(pht('Linter %s requires clang-format version 8.x. '.
+    if (substr($version, 0, 2) != '10') {
+      throw new Exception(pht('Linter %s requires clang-format version 10.x. '.
                               'You have version %s.',
                               ClangFormatLinter::class,
                               $version));
diff --git a/cmake/modules/ClangTidy.cmake b/cmake/modules/ClangTidy.cmake
--- a/cmake/modules/ClangTidy.cmake
+++ b/cmake/modules/ClangTidy.cmake
@@ -1,6 +1,6 @@
 if(NOT CLANG_TIDY_EXE)
 	include(DoOrFail)
-	find_program_or_fail(CLANG_TIDY_EXE clang-tidy clang-tidy-10 clang-tidy-9 clang-tidy-8)
+	find_program_or_fail(CLANG_TIDY_EXE clang-tidy clang-tidy-13 clang-tidy-12 clang-tidy-11 clang-tidy-10)
 
 	execute_process(
 		COMMAND "${CLANG_TIDY_EXE}" -version
@@ -9,8 +9,8 @@
 	)
 
 	string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" CLANG_TIDY_VERSION "${CLANG_TIDY_VERSION_OUTPUT}")
-	if("${CLANG_TIDY_VERSION}" VERSION_LESS "8.0.0")
-		message(FATAL_ERROR "clang-tidy version >= 8 is required")
+	if("${CLANG_TIDY_VERSION}" VERSION_LESS "10.0.0")
+		message(FATAL_ERROR "clang-tidy version >= 10 is required")
 	endif()
 
 	message(STATUS "Using clang-tidy: ${CLANG_TIDY_EXE} (version ${CLANG_TIDY_VERSION})")
diff --git a/contrib/utils/install-dependencies.sh b/contrib/utils/install-dependencies.sh
--- a/contrib/utils/install-dependencies.sh
+++ b/contrib/utils/install-dependencies.sh
@@ -107,9 +107,9 @@
 
 LLVM_PACKAGES=(
   clang-10
-  clang-format-8
-  clang-tidy-8
-  clang-tools-8
+  clang-format-10
+  clang-tidy-10
+  clang-tools-10
 )
 DEBIAN_FRONTEND=noninteractive apt-get install -y $(join_by ' ' "${LLVM_PACKAGES[@]}")
 
diff --git a/src/qt/recentrequeststablemodel.cpp b/src/qt/recentrequeststablemodel.cpp
--- a/src/qt/recentrequeststablemodel.cpp
+++ b/src/qt/recentrequeststablemodel.cpp
@@ -219,9 +219,8 @@
     updateAmountColumnTitle();
 }
 
-bool RecentRequestEntryLessThan::
-operator()(const RecentRequestEntry &left,
-           const RecentRequestEntry &right) const {
+bool RecentRequestEntryLessThan::operator()(
+    const RecentRequestEntry &left, const RecentRequestEntry &right) const {
     const RecentRequestEntry *pLeft = &left;
     const RecentRequestEntry *pRight = &right;
     if (order == Qt::DescendingOrder) {
diff --git a/src/random.cpp b/src/random.cpp
--- a/src/random.cpp
+++ b/src/random.cpp
@@ -761,8 +761,8 @@
     rng.SetKey(seed.begin(), 32);
 }
 
-FastRandomContext &FastRandomContext::
-operator=(FastRandomContext &&from) noexcept {
+FastRandomContext &
+FastRandomContext::operator=(FastRandomContext &&from) noexcept {
     requires_seed = from.requires_seed;
     rng = from.rng;
     std::copy(std::begin(from.bytebuf), std::end(from.bytebuf),