diff --git a/pkgs/applications/video/mkvtoolnix/default.nix b/pkgs/applications/video/mkvtoolnix/default.nix
index 8ac7af3b216..39d2f1e21ce 100644
--- a/pkgs/applications/video/mkvtoolnix/default.nix
+++ b/pkgs/applications/video/mkvtoolnix/default.nix
@@ -13,13 +13,13 @@ with lib;
 
 stdenv.mkDerivation rec {
   pname = "mkvtoolnix";
-  version = "51.0.0";
+  version = "53.0.0";
 
   src = fetchFromGitLab {
     owner  = "mbunkus";
     repo   = "mkvtoolnix";
     rev    = "release-${version}";
-    sha256 = "06k2slgac0fhgypmdriwdc5s09mry22vxk316ixfj5sv3irwn7wc";
+    sha256 = "04wjs3sgb3gn85gl8y1svx177d1213hswx37zdsj80giw1k5df79";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/development/libraries/libebml/default.nix b/pkgs/development/libraries/libebml/default.nix
index 5a8f1f00316..e7a877962cc 100644
--- a/pkgs/development/libraries/libebml/default.nix
+++ b/pkgs/development/libraries/libebml/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "libebml";
-  version = "1.4.0";
+  version = "1.4.1";
 
   src = fetchFromGitHub {
     owner  = "Matroska-Org";
     repo   = "libebml";
     rev    = "release-${version}";
-    sha256 = "052v4mjynndj9xgfl4lmlsnx9ai0pah0kjyr5fm34l7gj8vhc5s7";
+    sha256 = "04bn1i7g4vwmkv3hv26rmcb59zkl2rh37qnfjm52j560bjlyd7im";
   };
 
   nativeBuildInputs = [ cmake pkg-config ];