diff --git a/doc/build-archlinux.md b/doc/build-archlinux.md
index b568cdd37..cc7a9a3b8 100644
--- a/doc/build-archlinux.md
+++ b/doc/build-archlinux.md
@@ -1,5 +1,8 @@
 Arch Linux build guide
 -----------------------------------
+
+***NOTE: This documentation is outdated and needs to be updated***
+
 This example lists the steps necessary to setup and build a command line only, non-wallet distribution of the latest changes on Arch Linux:
 
     pacman -S git base-devel boost libevent python
diff --git a/doc/build-fedora.md b/doc/build-fedora.md
index f3132c4fc..0bfd28bdb 100644
--- a/doc/build-fedora.md
+++ b/doc/build-fedora.md
@@ -1,6 +1,8 @@
 Fedora build dependencies
 --------------------------
 
+***NOTE: This documentation is outdated and needs to be updated***
+
 Build requirements:
 
     sudo dnf install gcc-c++ libtool make autoconf automake openssl-devel libevent-devel boost-devel libdb4-devel libdb4-cxx-devel
diff --git a/doc/build-freebsd.md b/doc/build-freebsd.md
index e8cb3be80..f69c43f4c 100644
--- a/doc/build-freebsd.md
+++ b/doc/build-freebsd.md
@@ -1,6 +1,8 @@
 Building on FreeBSD
 --------------------
 
+***NOTE: This documentation is outdated and needs to be updated***
+
 (Updated as of FreeBSD 11.0)
 
 Clang is installed by default as `cc` compiler, this makes it easier to get
diff --git a/doc/build-openbsd.md b/doc/build-openbsd.md
index c7d5927a8..64f1e01bf 100644
--- a/doc/build-openbsd.md
+++ b/doc/build-openbsd.md
@@ -1,5 +1,8 @@
 OpenBSD build guide
 ======================
+
+***NOTE: This documentation is outdated and needs to be updated***
+
 (updated for OpenBSD 6.0)
 
 This guide describes how to build dogecoind and command-line utilities on OpenBSD.