diff --git a/pkgs/applications/radio/freedv/default.nix b/pkgs/applications/radio/freedv/default.nix
index ba8646885482..b648c04577e0 100644
--- a/pkgs/applications/radio/freedv/default.nix
+++ b/pkgs/applications/radio/freedv/default.nix
@@ -21,13 +21,13 @@
 
 stdenv.mkDerivation rec {
   pname = "freedv";
-  version = "1.8.3.1";
+  version = "1.8.4";
 
   src = fetchFromGitHub {
     owner = "drowe67";
     repo = "freedv-gui";
     rev = "v${version}";
-    hash = "sha256-LPCY5gPinxJkfPfumKggI/JQorcW+Qw/ZAP6XQmPkeA=";
+    hash = "sha256-X/jL6q2yLNtRq7Xg9JeXu1zXD0KCs59D1poA9hM3Ndo=";
   };
 
   postPatch = lib.optionalString stdenv.isDarwin ''
@@ -58,12 +58,15 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     "-DUSE_INTERNAL_CODEC2:BOOL=FALSE"
     "-DUSE_STATIC_DEPS:BOOL=FALSE"
+    "-DUNITTEST=ON"
   ] ++ lib.optionals pulseSupport [ "-DUSE_PULSEAUDIO:BOOL=TRUE" ];
 
   NIX_CFLAGS_COMPILE = lib.optionals (stdenv.isDarwin && stdenv.isx86_64) [
     "-DAPPLE_OLD_XCODE"
   ];
 
+  doCheck = true;
+
   meta = with lib; {
     homepage = "https://freedv.org/";
     description = "Digital voice for HF radio";
diff --git a/pkgs/development/libraries/codec2/default.nix b/pkgs/development/libraries/codec2/default.nix
index 303965b34b63..018ef10aebd5 100644
--- a/pkgs/development/libraries/codec2/default.nix
+++ b/pkgs/development/libraries/codec2/default.nix
@@ -1,4 +1,11 @@
-{ lib, stdenv, fetchFromGitHub, cmake }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, freedvSupport ? false
+, lpcnetfreedv
+, codec2
+}:
 
 stdenv.mkDerivation rec {
   pname = "codec2";
@@ -13,6 +20,10 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
+  buildInputs = lib.optionals freedvSupport [
+    lpcnetfreedv
+  ];
+
   # Install a binary that is used by openwebrx
   postInstall = ''
     install -Dm0755 src/freedv_rx -t $out/bin/
@@ -26,6 +37,8 @@ stdenv.mkDerivation rec {
   cmakeFlags = [
     # RPATH of binary /nix/store/.../bin/freedv_rx contains a forbidden reference to /build/
     "-DCMAKE_SKIP_BUILD_RPATH=ON"
+  ] ++ lib.optionals freedvSupport [
+    "-DLPCNET=ON"
   ];
 
   meta = with lib; {
diff --git a/pkgs/development/libraries/lpcnetfreedv/default.nix b/pkgs/development/libraries/lpcnetfreedv/default.nix
index 33b295b9a1ec..b3b1d7059d81 100644
--- a/pkgs/development/libraries/lpcnetfreedv/default.nix
+++ b/pkgs/development/libraries/lpcnetfreedv/default.nix
@@ -4,21 +4,21 @@ let
   dataVersion = "191005_v1.0";
   data = fetchurl {
     url = "http://rowetel.com/downloads/deep/lpcnet_${dataVersion}.tgz";
-    sha256 = "1j1695hm2pg6ri611f9kr3spm4yxvpikws55z9zxizai8y94152h";
+    sha256 = "sha256-UJRAkkdR/dh/+qVoPuPd3ZN69cgzuRBMzOZdUWFJJsg=";
   };
-in stdenv.mkDerivation rec {
+in
+stdenv.mkDerivation rec {
   pname = "lpcnetfreedv";
-  version = "unstable-2021-06-29";
+  version = "unstable-2022-08-22";
 
   src = fetchFromGitHub {
     owner = "drowe67";
     repo = "LPCNet";
-    rev = "0dc5935bbf49ff3ba3c9654cc2f802838ebbaead";
-    sha256 = "0r6488z40fkar11ync8achpg5l6qz7y7cbh7cs3b3w4fsxn58q9i";
+    rev = "67a6eb74d0c07faddcdce199856862cc45779d25";
+    sha256 = "sha256-eHYZoDgoZBuuLvQn9X7H/zmK5onOAniOgY1/8RVn8gk=";
   };
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ codec2 ];
 
   postPatch = ''
     mkdir build
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d08b09c37e3d..c2d16233d804 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -28644,6 +28644,9 @@ with pkgs;
 
   freedv = callPackage ../applications/radio/freedv {
     inherit (darwin.apple_sdk.frameworks) AppKit AVFoundation Cocoa CoreMedia;
+    codec2 = codec2.override {
+      freedvSupport = true;
+    };
   };
 
   freemind = callPackage ../applications/misc/freemind {