diff --git a/pkgs/development/tools/misc/gnum4/default.nix b/pkgs/development/tools/misc/gnum4/default.nix
index 5184b709e3d..ee92b01c0f8 100644
--- a/pkgs/development/tools/misc/gnum4/default.nix
+++ b/pkgs/development/tools/misc/gnum4/default.nix
@@ -1 +1 @@
-import ./m4-1.4.6.nix
+import ./m4-1.4.7.nix
diff --git a/pkgs/development/tools/misc/gnum4/m4-1.4.4.nix b/pkgs/development/tools/misc/gnum4/m4-1.4.4.nix
deleted file mode 100644
index c008f3e8740..00000000000
--- a/pkgs/development/tools/misc/gnum4/m4-1.4.4.nix
+++ /dev/null
@@ -1,8 +0,0 @@
-{stdenv, fetchurl}:
-stdenv.mkDerivation {
-  name = "gnum4-1.4.4";
-  src = fetchurl {
-    url = ftp://ftp.nluug.nl/pub/gnu/m4/m4-1.4.4.tar.bz2;
-    md5 = "eb93bfbcb12cf00165583302bb31a822";
-  };
-}
diff --git a/pkgs/development/tools/misc/gnum4/m4-1.4.5.nix b/pkgs/development/tools/misc/gnum4/m4-1.4.5.nix
deleted file mode 100644
index 8386df4f32d..00000000000
--- a/pkgs/development/tools/misc/gnum4/m4-1.4.5.nix
+++ /dev/null
@@ -1,8 +0,0 @@
-{stdenv, fetchurl}:
-stdenv.mkDerivation {
-  name = "gnum4-1.4.5";
-  src = fetchurl {
-    url = ftp://ftp.nluug.nl/pub/gnu/m4/m4-1.4.5.tar.bz2;
-    md5 = "8bcd8244d5bed9f8e2d5f05ad693b8b4";
-  };
-}
diff --git a/pkgs/development/tools/misc/gnum4/m4-1.4.6.nix b/pkgs/development/tools/misc/gnum4/m4-1.4.6.nix
deleted file mode 100644
index 9ca77ea0e86..00000000000
--- a/pkgs/development/tools/misc/gnum4/m4-1.4.6.nix
+++ /dev/null
@@ -1,8 +0,0 @@
-{stdenv, fetchurl}:
-stdenv.mkDerivation {
-  name = "gnum4-1.4.6";
-  src = fetchurl {
-    url = ftp://ftp.nluug.nl/pub/gnu/m4/m4-1.4.6.tar.bz2;
-    md5 = "f5babaaa1e337f0aee3bdee55c758d79";
-  };
-}