diff --git a/README.md b/README.md
index 5dba31ac..2f6842d3 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ This document describes how to build the FreeDV GUI program for various operatin
   ```
   $ sudo apt install libspeexdsp-dev libsamplerate0-dev sox git \
   libwxgtk3.0-gtk3-dev portaudio19-dev libhamlib-dev libasound2-dev libao-dev \
-  libgsm1-dev libsndfile-dev cmake module-assistant build-essential
+  libgsm1-dev libsndfile1-dev cmake module-assistant build-essential
   $ git clone https://github.com/drowe67/freedv-gui.git
   $ cd freedv-gui
   $ ./build_linux.sh portaudio
@@ -45,7 +45,7 @@ This document describes how to build the FreeDV GUI program for various operatin
   ```
   $ sudo apt install libspeexdsp-dev libsamplerate0-dev sox git \
   libwxgtk3.0-gtk3-dev libhamlib-dev libasound2-dev libao-dev \
-  libgsm1-dev libsndfile-dev cmake module-assistant build-essential libpulse-dev
+  libgsm1-dev libsndfile1-dev cmake module-assistant build-essential libpulse-dev
   $ git clone https://github.com/drowe67/freedv-gui.git
   $ cd freedv-gui
   $ ./build_linux.sh pulseaudio
diff --git a/USER_MANUAL.md b/USER_MANUAL.md
index fcafa3f1..46752f74 100644
--- a/USER_MANUAL.md
+++ b/USER_MANUAL.md
@@ -789,7 +789,9 @@ LDPC | Low Density Parity Check Codes - a family of powerful FEC codes
     * Update FreeDV configuration defaults to improve first-time usability. (PR #293)
 3. Bugfixes:
     * Fix issue with 2020B not being selected as default on next start (PR #299)
-    
+4. Documentation:
+    * Update manual to reflect Ubuntu renaming libsndfile-dev to libsnd1file-dev. (PR #297)
+
 ## V1.8.4 October 2022
 
 1. Build system: