diff --git a/pkgs/development/libraries/cogl/1.20.nix b/pkgs/development/libraries/cogl/1.20.nix
deleted file mode 100644
index ae202b093777..000000000000
--- a/pkgs/development/libraries/cogl/1.20.nix
+++ /dev/null
@@ -1,56 +0,0 @@
-{ stdenv, fetchurl, pkgconfig, mesa_noglu, glib, gdk_pixbuf, xorg, libintlOrEmpty
-, pangoSupport ? true, pango, cairo, gobjectIntrospection
-, gstreamerSupport ? true, gst_all_1 }:
-
-let
-  ver_maj = "1.20";
-  ver_min = "0";
-in
-stdenv.mkDerivation rec {
-  name = "cogl-${ver_maj}.${ver_min}";
-
-  src = fetchurl {
-    url = "mirror://gnome/sources/cogl/${ver_maj}/${name}.tar.xz";
-    sha256 = "729e35495829e7d31fafa3358e47b743ba21a2b08ff9b6cd28fb74c0de91192b";
-  };
-
-  nativeBuildInputs = [ pkgconfig ];
-
-  configureFlags = [
-    "--enable-introspection"
-    "--enable-kms-egl-platform"
-  ] ++ stdenv.lib.optional gstreamerSupport "--enable-cogl-gst"
-    ++ stdenv.lib.optionals (!stdenv.isDarwin) [ "--enable-gles1" "--enable-gles2" ];
-
-  propagatedBuildInputs = with xorg; [
-      glib gdk_pixbuf gobjectIntrospection
-      mesa_noglu libXrandr libXfixes libXcomposite libXdamage
-    ]
-    ++ libintlOrEmpty
-    ++ stdenv.lib.optionals gstreamerSupport [ gst_all_1.gstreamer
-                                               gst_all_1.gst-plugins-base ];
-
-  buildInputs = stdenv.lib.optionals pangoSupport [ pango cairo ];
-
-  COGL_PANGO_DEP_CFLAGS
-    = stdenv.lib.optionalString (stdenv.isDarwin && pangoSupport)
-      "-I${pango.dev}/include/pango-1.0 -I${cairo.dev}/include/cairo";
-
-  NIX_LDFLAGS = stdenv.lib.optionalString stdenv.isDarwin "-lintl";
-
-  #doCheck = true; # all tests fail (no idea why)
-
-  meta = with stdenv.lib; {
-    description = "A small open source library for using 3D graphics hardware for rendering";
-    maintainers = with maintainers; [ lovek323 ];
-
-    longDescription = ''
-      Cogl is a small open source library for using 3D graphics hardware for
-      rendering. The API departs from the flat state machine style of OpenGL
-      and is designed to make it easy to write orthogonal components that can
-      render without stepping on each other's toes.
-    '';
-
-    platforms = stdenv.lib.platforms.mesaPlatforms;
-  };
-}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4708afa56d5d..404965ccf52b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7261,8 +7261,6 @@ in
 
   cogl = callPackage ../development/libraries/cogl { };
 
-  cogl_1_20 = callPackage ../development/libraries/cogl/1.20.nix { };
-
   cogl_1_22 = callPackage ../development/libraries/cogl/1.22.nix { };
 
   coin3d = callPackage ../development/libraries/coin3d { };