diff --git a/pkgs/applications/audio/pulseeffects/default.nix b/pkgs/applications/audio/pulseeffects/default.nix
index 0ba926fab4f..33b15e977e7 100644
--- a/pkgs/applications/audio/pulseeffects/default.nix
+++ b/pkgs/applications/audio/pulseeffects/default.nix
@@ -1,5 +1,6 @@
 { lib, stdenv
 , fetchFromGitHub
+, fetchpatch
 , meson
 , ninja
 , pkg-config
@@ -45,13 +46,15 @@ let
   ];
 in stdenv.mkDerivation rec {
   pname = "pulseeffects";
-  version = "5.0.0";
+  # 5.0.3 crashes. Test carefully before updating.
+  # https://github.com/wwmm/pulseeffects/issues/927
+  version = "5.0.2";
 
   src = fetchFromGitHub {
     owner = "wwmm";
     repo = "pulseeffects";
     rev = "v${version}";
-    sha256 = "1zs13bivxlgcb24lz1pgmgy2chcjxnmn4lz7g1n0ygiaaj4c30xj";
+    sha256 = "14ir25q6bws26im6qmj3k6hkfdh5pc6mbvln7wkdwy5dv0vix3cm";
   };
 
   nativeBuildInputs = [
@@ -87,6 +90,15 @@ in stdenv.mkDerivation rec {
     zita-convolver
   ];
 
+  patches = [
+    (fetchpatch {
+      # Fix build failure.
+      # https://github.com/wwmm/pulseeffects/pull/934
+      url = "https://github.com/wwmm/pulseeffects/commit/ab7354a6850d23840b4c9af212dbebf4f31a562f.patch";
+      sha256 = "1hd05xn6sp0xs632mqgwk19hl40kh2f69mx5mgzahysrj057w22c";
+    })
+  ];
+
   postPatch = ''
     chmod +x meson_post_install.py
     patchShebangs meson_post_install.py
@@ -104,6 +116,8 @@ in stdenv.mkDerivation rec {
   BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
   BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
 
+  separateDebugInfo = true;
+
   meta = with lib; {
     description = "Limiter, compressor, reverberation, equalizer and auto volume effects for Pulseaudio applications";
     homepage = "https://github.com/wwmm/pulseeffects";
diff --git a/pkgs/development/libraries/rnnoise/default.nix b/pkgs/development/libraries/rnnoise/default.nix
index 4dec2f3cfcb..ad587f0f583 100644
--- a/pkgs/development/libraries/rnnoise/default.nix
+++ b/pkgs/development/libraries/rnnoise/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation (rec {
   pname = "rnnoise";
-  version = "2020-06-28";
+  version = "2021-01-22";
 
   src = fetchFromGitHub {
     owner = "xiph";
     repo = "rnnoise";
-    rev = "90ec41ef659fd82cfec2103e9bb7fc235e9ea66c";
-    sha256 = "02z6qzjajhlpsb80lwl7cqqga9hm638psnqnppjkw84w4lrp15ny";
+    rev = "1cbdbcf1283499bbb2230a6b0f126eb9b236defd";
+    sha256 = "1y0rzgmvy8bf9a431garpm2w177s6ajgf79y5ymw4yb0pik57rwb";
   };
 
   nativeBuildInputs = [ autoreconfHook ];