diff --git a/INSTALL b/INSTALL
index c96e7d3b3..02e0429e3 100644
--- a/INSTALL
+++ b/INSTALL
@@ -23,10 +23,10 @@ Building from Source
 ====================
 
 On Linux systems  some of the prerequisite libraries  are available in
-the mainstream distribution repositories. They  are Qt v5 and FFTW v3.
-For MS  Windows see the section  "Building from Source on  MS Windows"
-below. For  Apple Mac see the  section "Building from Source  on Apple
-Mac".
+the mainstream distribution repositories. They are Qt v5, FFTW v3, and
+the Boost  C++ libraries.   For MS Windows  see the  section "Building
+from  Source on  MS  Windows" below.  For Apple  Mac  see the  section
+"Building from Source on Apple Mac".
 
 Qt v5, preferably v5.9 or later is required to build WSJT-X.
 
diff --git a/doc/user_guide/en/install-linux.adoc b/doc/user_guide/en/install-linux.adoc
index bbd53b2b9..ff108ef34 100644
--- a/doc/user_guide/en/install-linux.adoc
+++ b/doc/user_guide/en/install-linux.adoc
@@ -43,7 +43,8 @@ You may also need to execute the following command in a terminal:
 ....
 sudo apt install libgfortran5 libqt5widgets5 libqt5network5 \
      libqt5printsupport5 libqt5multimedia5-plugins libqt5serialport5 \
-     libqt5sql5-sqlite libfftw3-single3 libgomp1 libusb-1.0-0
+     libqt5sql5-sqlite libfftw3-single3 libgomp1 libboost-all-dev \
+     libusb-1.0-0
 ....
 
 Fedora, CentOS, Red Hat, and other rpm-based systems:
@@ -75,5 +76,5 @@ You may also need to execute the following command in a terminal:
 ....
 sudo dnf install libgfortran fftw-libs-single qt5-qtbase \
      qt5-qtmultimedia qt5-qtserialport qt5-qtsvg \
-     qt5-qtserialport libgomp libusbx
+     qt5-qtserialport libgomp boost libusbx
 ....