diff --git a/pkgs/development/libraries/libebml/default.nix b/pkgs/development/libraries/libebml/default.nix
index b5b2b8e37349..59651af2b8cf 100644
--- a/pkgs/development/libraries/libebml/default.nix
+++ b/pkgs/development/libraries/libebml/default.nix
@@ -1,19 +1,27 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchFromGitHub, cmake, pkgconfig }:
 
 stdenv.mkDerivation rec {
-  name = "libebml-1.3.5";
+  name = "libebml-${version}";
+  version = "1.3.6";
 
-  src = fetchurl {
-    url = "https://dl.matroska.org/downloads/libebml/${name}.tar.xz";
-    sha256 = "005a0ipqnfbsq47zrc61zszi439jw32q5xd6dc1jyb3lc0zl266q";
+  src = fetchFromGitHub {
+    owner  = "Matroska-Org";
+    repo   = "libebml";
+    rev    = "release-${version}";
+    sha256 = "0fl8d35ywj9id93yp78qlxy7j81kjri957agq40r420kmwac3dzs";
   };
 
+  nativeBuildInputs = [ cmake pkgconfig ];
+
+  cmakeFlags = [
+    "-DBUILD_SHARED_LIBS=YES"
+  ];
+
   meta = with stdenv.lib; {
     description = "Extensible Binary Meta Language library";
-    license = licenses.lgpl21;
     homepage = https://dl.matroska.org/downloads/libebml/;
-    maintainers = [ maintainers.spwhitt ];
+    license = licenses.lgpl21;
+    maintainers = with maintainers; [ spwhitt ];
     platforms = platforms.unix;
   };
 }
-
diff --git a/pkgs/development/libraries/libmatroska/default.nix b/pkgs/development/libraries/libmatroska/default.nix
index e7bce0e80187..bbc694619d4c 100644
--- a/pkgs/development/libraries/libmatroska/default.nix
+++ b/pkgs/development/libraries/libmatroska/default.nix
@@ -1,23 +1,30 @@
-{ stdenv, fetchurl, pkgconfig, libebml }:
+{ stdenv, fetchFromGitHub, cmake, pkgconfig
+, libebml }:
 
 stdenv.mkDerivation rec {
-  name = "libmatroska-1.4.8";
+  name = "libmatroska-${version}";
+  version = "1.4.9";
 
-  src = fetchurl {
-    url = "https://dl.matroska.org/downloads/libmatroska/${name}.tar.xz";
-    sha256 = "14n9sw974prr3yp4yjb7aadi6x2yz5a0hjw8fs3qigy5shh2piyq";
+  src = fetchFromGitHub {
+    owner  = "Matroska-Org";
+    repo   = "libmatroska";
+    rev    = "release-${version}";
+    sha256 = "1hfrcpvmyqnvdkw8rz1z20zw7fpnjyl5h0g9ky7k6y1a44b1fz86";
   };
 
-  nativeBuildInputs = [ pkgconfig ];
+  nativeBuildInputs = [ cmake pkgconfig ];
 
   buildInputs = [ libebml ];
 
+  cmakeFlags = [
+    "-DBUILD_SHARED_LIBS=YES"
+  ];
+
   meta = with stdenv.lib; {
     description = "A library to parse Matroska files";
     homepage = https://matroska.org/;
     license = licenses.lgpl21;
-    maintainers = [ maintainers.spwhitt ];
+    maintainers = with maintainers; [ spwhitt ];
     platforms = platforms.unix;
   };
 }
-