diff --git a/pkgs/development/libraries/fox/fox-1.6.nix b/pkgs/development/libraries/fox/fox-1.6.nix
index 2fe104e849fd..604fe3c2fdf0 100644
--- a/pkgs/development/libraries/fox/fox-1.6.nix
+++ b/pkgs/development/libraries/fox/fox-1.6.nix
@@ -21,6 +21,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
+    branch = "1.6";
     description = "FOX is a C++ based class library for building Graphical User Interfaces";
     longDescription = ''
         FOX stands for Free Objects for X.
diff --git a/pkgs/development/libraries/gmp/4.3.2.nix b/pkgs/development/libraries/gmp/4.3.2.nix
index e9cfda032b17..aabb79d27a97 100644
--- a/pkgs/development/libraries/gmp/4.3.2.nix
+++ b/pkgs/development/libraries/gmp/4.3.2.nix
@@ -28,6 +28,7 @@ stdenv.mkDerivation rec {
   doCheck = false;
 
   meta = {
+    branch = "4";
     description = "GNU multiple precision arithmetic library";
 
     longDescription =
diff --git a/pkgs/development/tools/parsing/flex/2.5.35.nix b/pkgs/development/tools/parsing/flex/2.5.35.nix
index 8047080a125d..14209225bc61 100644
--- a/pkgs/development/tools/parsing/flex/2.5.35.nix
+++ b/pkgs/development/tools/parsing/flex/2.5.35.nix
@@ -20,6 +20,7 @@ stdenv.mkDerivation {
   };
 
   meta = {
+    branch = "2.5.35";
     homepage = http://flex.sourceforge.net/;
     description = "A fast lexical analyser generator";
   };