diff --git a/pkgs/applications/misc/mediainfo-gui/default.nix b/pkgs/applications/misc/mediainfo-gui/default.nix
index 89d7c2df741..0ce8d8c373d 100644
--- a/pkgs/applications/misc/mediainfo-gui/default.nix
+++ b/pkgs/applications/misc/mediainfo-gui/default.nix
@@ -2,11 +2,11 @@
 , desktop-file-utils, libSM, imagemagick }:
 
 stdenv.mkDerivation rec {
-  version = "21.03";
+  version = "21.09";
   pname = "mediainfo-gui";
   src = fetchurl {
     url = "https://mediaarea.net/download/source/mediainfo/${version}/mediainfo_${version}.tar.xz";
-    sha256 = "07h2a1lbw5ak6c9bcn8qydchl0wpgk945rf9sfcqjyv05h5wll6y";
+    sha256 = "0mqcqm8y2whnbdi2ry7jd755gfl5ccdqhwjh67hsyr7c0ajxk3vv";
   };
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
diff --git a/pkgs/applications/misc/mediainfo/default.nix b/pkgs/applications/misc/mediainfo/default.nix
index 70f463c0236..146df27726b 100644
--- a/pkgs/applications/misc/mediainfo/default.nix
+++ b/pkgs/applications/misc/mediainfo/default.nix
@@ -1,11 +1,11 @@
 { lib, stdenv, fetchurl, autoreconfHook, pkg-config, libzen, libmediainfo, zlib }:
 
 stdenv.mkDerivation rec {
-  version = "21.03";
+  version = "21.09";
   pname = "mediainfo";
   src = fetchurl {
     url = "https://mediaarea.net/download/source/mediainfo/${version}/mediainfo_${version}.tar.xz";
-    sha256 = "07h2a1lbw5ak6c9bcn8qydchl0wpgk945rf9sfcqjyv05h5wll6y";
+    sha256 = "0mqcqm8y2whnbdi2ry7jd755gfl5ccdqhwjh67hsyr7c0ajxk3vv";
   };
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];
diff --git a/pkgs/development/libraries/libmediainfo/default.nix b/pkgs/development/libraries/libmediainfo/default.nix
index 3541d3d466f..7fa7ce9482a 100644
--- a/pkgs/development/libraries/libmediainfo/default.nix
+++ b/pkgs/development/libraries/libmediainfo/default.nix
@@ -1,11 +1,11 @@
 { lib, stdenv, fetchurl, autoreconfHook, pkg-config, libzen, zlib }:
 
 stdenv.mkDerivation rec {
-  version = "21.03";
+  version = "21.09";
   pname = "libmediainfo";
   src = fetchurl {
     url = "https://mediaarea.net/download/source/libmediainfo/${version}/libmediainfo_${version}.tar.xz";
-    sha256 = "1jm4mk539wf3crgpcddgwdixshwdzm37mkb5441lifhcz2mykdsn";
+    sha256 = "09pinxqw3z3hxrafn67clw1cb1z9aqfy6gkiavginfm0yr299gk9";
   };
 
   nativeBuildInputs = [ autoreconfHook pkg-config ];