diff --git a/pkgs/applications/graphics/freecad/default.nix b/pkgs/applications/graphics/freecad/default.nix
index f9322add5c0..3a5d36dfac1 100644
--- a/pkgs/applications/graphics/freecad/default.nix
+++ b/pkgs/applications/graphics/freecad/default.nix
@@ -9,13 +9,13 @@ let
   pythonPackages = python3Packages;
 in mkDerivation rec {
   pname = "freecad-unstable";
-  version = "2020-09-25";
+  version = "2020-10-17";
 
   src = fetchFromGitHub {
     owner = "FreeCAD";
     repo = "FreeCAD";
-    rev = "7616153b3c31ace006169cdc2fdafab484498858";
-    sha256 = "1vffvzv3gkndfj2k8ik0afyk9rgngnr4aai5py66qd63qd7kmxch";
+    rev = "f3bdaaa55a6c03b297924c40819d23e4603fa55b";
+    sha256 = "1q1iy4i9k65v8z7h8a6r4bf5ycn124jp26xwp0xwbar4gnkx2jiq";
   };
 
   nativeBuildInputs = [
@@ -32,6 +32,7 @@ in mkDerivation rec {
     libGLU libXmu qtbase qttools qtwebengine qtxmlpatterns
   ] ++ (with pythonPackages; [
     matplotlib pycollada shiboken2 pyside2 pyside2-tools pivy python boost
+    GitPython # for addon manager
   ]);
 
   cmakeFlags = [
diff --git a/pkgs/applications/graphics/freecad/stable.nix b/pkgs/applications/graphics/freecad/stable.nix
deleted file mode 100644
index 657caeca8b3..00000000000
--- a/pkgs/applications/graphics/freecad/stable.nix
+++ /dev/null
@@ -1,85 +0,0 @@
-{ stdenv, mkDerivation, fetchFromGitHub, fetchpatch, cmake, ninja, coin3d,
-xercesc, ode, eigen, qtbase, qttools, qtwebkit, wrapQtAppsHook,
-opencascade-occt, gts, hdf5, vtk, medfile, zlib, python3Packages, swig,
-gfortran, libXmu, soqt, libf2c, libGLU, makeWrapper, pkgconfig, mpi ? null }:
-
-assert mpi != null;
-
-let
-  pythonPackages = python3Packages;
-in mkDerivation rec {
-  pname = "freecad";
-  version = "0.18.4";
-
-  src = fetchFromGitHub {
-    owner = "FreeCAD";
-    repo = "FreeCAD";
-    rev = version;
-    sha256 = "1phs9a0px5fnzpyx930cz39p5dis0f0yajxzii3c3sazgkzrd55s";
-  };
-
-  nativeBuildInputs = [
-    cmake
-    ninja
-    pkgconfig
-    pythonPackages.pyside2-tools
-    wrapQtAppsHook
-  ];
-
-  buildInputs = [
-    cmake coin3d xercesc ode eigen opencascade-occt gts
-    zlib swig gfortran soqt libf2c makeWrapper mpi vtk hdf5 medfile
-    libGLU libXmu qtbase qttools qtwebkit
-  ] ++ (with pythonPackages; [
-    matplotlib pycollada shiboken2 pyside2 pyside2-tools pivy python boost
-  ]);
-
-  # Fix missing app icon on Wayland. Has been upstreamed and should be safe to
-  # remove in versions >= 0.19
-  patches = [
-    (fetchpatch {
-      url = "https://github.com/FreeCAD/FreeCAD/commit/c4d2a358ca125d51d059dfd72dcbfba326196dfc.patch";
-      sha256 = "0yqc9zrxgi2c2xcidm8wh7a9yznkphqvjqm9742qm5fl20p8gl4h";
-    })
-  ];
-
-  cmakeFlags = [
-    "-DBUILD_QT5=ON"
-    "-DSHIBOKEN_INCLUDE_DIR=${pythonPackages.shiboken2}/include"
-    "-DSHIBOKEN_LIBRARY=Shiboken2::libshiboken"
-    ("-DPYSIDE_INCLUDE_DIR=${pythonPackages.pyside2}/include"
-      + ";${pythonPackages.pyside2}/include/PySide2/QtCore"
-      + ";${pythonPackages.pyside2}/include/PySide2/QtWidgets"
-      + ";${pythonPackages.pyside2}/include/PySide2/QtGui"
-      )
-    "-DPYSIDE_LIBRARY=PySide2::pyside2"
-  ];
-
-  # This should work on both x86_64, and i686 linux
-  preBuild = ''
-    export NIX_LDFLAGS="-L${gfortran.cc}/lib64 -L${gfortran.cc}/lib $NIX_LDFLAGS";
-  '';
-
-  # Their main() removes PYTHONPATH=, and we rely on it.
-  preConfigure = ''
-    sed '/putenv("PYTHONPATH/d' -i src/Main/MainGui.cpp
-
-    qtWrapperArgs+=(--prefix PYTHONPATH : "$PYTHONPATH")
-  '';
-
-  qtWrapperArgs = [
-    "--set COIN_GL_NO_CURRENT_CONTEXT_CHECK 1"
-  ];
-
-  postFixup = ''
-    mv $out/share/doc $out
-  '';
-
-  meta = with stdenv.lib; {
-    description = "General purpose Open Source 3D CAD/MCAD/CAx/CAE/PLM modeler";
-    homepage = "https://www.freecadweb.org/";
-    license = licenses.lgpl2Plus;
-    maintainers = with maintainers; [ viric gebner ];
-    platforms = platforms.linux;
-  };
-}
diff --git a/pkgs/development/libraries/opencascade-occt/7.3.nix b/pkgs/development/libraries/opencascade-occt/7.3.nix
deleted file mode 100644
index 5f8302aff3c..00000000000
--- a/pkgs/development/libraries/opencascade-occt/7.3.nix
+++ /dev/null
@@ -1,29 +0,0 @@
-{ stdenv, fetchurl, fetchpatch, cmake, ninja, tcl, tk,
-  libGL, libGLU, libXext, libXmu, libXi, darwin }:
-
-stdenv.mkDerivation rec {
-  pname = "opencascade-occt";
-  version = "7.3.0p3";
-  commit = "V${builtins.replaceStrings ["."] ["_"] version}";
-
-  src = fetchurl {
-    name = "occt-${commit}.tar.gz";
-    url = "https://git.dev.opencascade.org/gitweb/?p=occt.git;a=snapshot;h=${commit};sf=tgz";
-    sha256 = "0k9c3ypcnjcilq1dhsf6xxbd52gyq4h5rchvp30k3c8ph4ris5pz";
-  };
-
-  nativeBuildInputs = [ cmake ninja ];
-  buildInputs = [ tcl tk libGL libGLU libXext libXmu libXi ]
-    ++ stdenv.lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Cocoa;
-
-  meta = with stdenv.lib; {
-    description = "Open CASCADE Technology, libraries for 3D modeling and numerical simulation";
-    homepage = "https://www.opencascade.org/";
-    license = licenses.lgpl21;  # essentially...
-    # The special exception defined in the file OCCT_LGPL_EXCEPTION.txt
-    # are basically about making the license a little less share-alike.
-    maintainers = with maintainers; [ amiloradovsky ];
-    platforms = platforms.all;
-  };
-
-}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 326f54578f4..8a1d4af07a4 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14707,7 +14707,6 @@ in
     inherit (darwin.apple_sdk.frameworks) OpenCL Cocoa;
   };
   opencascade-occt = callPackage ../development/libraries/opencascade-occt { };
-  opencascade-occt730 = callPackage ../development/libraries/opencascade-occt/7.3.nix { };
 
   opencl-headers = callPackage ../development/libraries/opencl-headers { };
 
@@ -20846,11 +20845,6 @@ in
   freecad = libsForQt5.callPackage ../applications/graphics/freecad {
     mpi = openmpi;
   };
-  freecadStable = libsForQt5.callPackage ../applications/graphics/freecad/stable.nix {
-    mpi = openmpi;
-    opencascade-occt = opencascade-occt730;
-    python3Packages = python37Packages;
-  };
 
   freemind = callPackage ../applications/misc/freemind {
     jdk = jdk8; # TODO: remove override https://github.com/NixOS/nixpkgs/pull/89731