diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -55,8 +55,8 @@
      lt_cv_deplibs_check_method="pass_all"
   ;;
 esac
-dnl Require C++11 compiler (no GNU extensions)
-AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory], [nodefault])
+dnl Require C++14 compiler (no GNU extensions)
+AX_CXX_COMPILE_STDCXX([14], [noext], [mandatory], [nodefault])
 dnl Check if -latomic is required for <std::atomic>
 CHECK_ATOMIC
 
diff --git a/doc/build-osx.md b/doc/build-osx.md
--- a/doc/build-osx.md
+++ b/doc/build-osx.md
@@ -32,6 +32,8 @@
 Build Bitcoin ABC
 -----------------
 
+Before you start building, please make sure that your compiler supports C++14.
+
 1. Clone the Bitcoin ABC source code and cd into `bitcoin-abc`
 
         git clone https://github.com/Bitcoin-ABC/bitcoin-abc.git
diff --git a/doc/build-unix.md b/doc/build-unix.md
--- a/doc/build-unix.md
+++ b/doc/build-unix.md
@@ -17,6 +17,8 @@
 To Build
 ---------------------
 
+Before you start building, please make sure that your compiler supports C++14.
+
 It is recommended to create a build directory to build out-of-tree.
 
 ```bash
diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -3,3 +3,4 @@
   <https://download.bitcoinabc.org/0.19.3/>
 
 This release includes the following features and fixes:
+ - Code standard updated to c++14.
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -3,7 +3,7 @@
 cmake_minimum_required(VERSION 3.5)
 project(BitcoinABC)
 
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 14)
 
 # Default visibility is hidden on all targets.
 set(CMAKE_C_VISIBILITY_PRESET hidden)