diff --git a/pkgs/development/libraries/ffmpeg/2.3.x.nix b/pkgs/development/libraries/ffmpeg/2.3.x.nix
index 8114eb4752d2..2b4b0569b552 100644
--- a/pkgs/development/libraries/ffmpeg/2.3.x.nix
+++ b/pkgs/development/libraries/ffmpeg/2.3.x.nix
@@ -104,5 +104,6 @@ stdenv.mkDerivation rec {
     license = if (fdkAACSupport || faacSupport) then stdenv.lib.licenses.unfree else stdenv.lib.licenses.gpl2Plus;
     platforms = stdenv.lib.platforms.linux;
     maintainers = with stdenv.lib.maintainers; [ fuuzetsu ];
+    branch = "2.3";
   };
 }
diff --git a/pkgs/development/libraries/libpng/12.nix b/pkgs/development/libraries/libpng/12.nix
index 16fc3bffacee..fae6f9ba5564 100644
--- a/pkgs/development/libraries/libpng/12.nix
+++ b/pkgs/development/libraries/libpng/12.nix
@@ -28,5 +28,6 @@ stdenv.mkDerivation rec {
     homepage = http://www.libpng.org/pub/png/libpng.html;
     license = stdenv.lib.licenses.libpng;
     maintainers = with stdenv.lib.maintainers; [ fuuzetsu ];
+    branch = "1.2";
   };
 }
diff --git a/pkgs/development/libraries/libpng/15.nix b/pkgs/development/libraries/libpng/15.nix
index 85ebe56d8665..177c534ffafb 100644
--- a/pkgs/development/libraries/libpng/15.nix
+++ b/pkgs/development/libraries/libpng/15.nix
@@ -21,5 +21,6 @@ stdenv.mkDerivation rec {
     homepage = http://www.libpng.org/pub/png/libpng.html;
     license = stdenv.lib.licenses.libpng;
     maintainers = with stdenv.lib.maintainers; [ fuuzetsu ];
+    branch = "1.5";
   };
 }