diff --git a/pkgs/development/libraries/git2/default.nix b/pkgs/development/libraries/git2/default.nix
index 2d89355cffe0..ed32f68635b0 100644
--- a/pkgs/development/libraries/git2/default.nix
+++ b/pkgs/development/libraries/git2/default.nix
@@ -1,25 +1,25 @@
 { stdenv, fetchFromGitHub, cmake, pkgconfig, python3
-, zlib, libssh2, openssl, http-parser, curl
+, zlib, libssh2, openssl, http-parser
 , libiconv, Security
 }:
 
 stdenv.mkDerivation rec {
   pname = "libgit2";
-  version = "0.27.8";
-  # keep the version in sync with pythonPackages.pygit2 and libgit2-glib
+  version = "0.28.4";
+  # keep the version in sync with python3.pkgs.pygit2 and libgit2-glib
 
   src = fetchFromGitHub {
     owner = "libgit2";
     repo = "libgit2";
     rev = "v${version}";
-    sha256 = "0wzx8nkyy9m7mx6cks58chjd4289vjsw97mxm9w6f1ggqsfnmbr9";
+    sha256 = "171b25aym4q88bidc4c76y4l6jmdwifm3q9zjqsll0wjhlkycfy1";
   };
 
   cmakeFlags = [ "-DTHREADSAFE=ON" ];
 
   nativeBuildInputs = [ cmake python3 pkgconfig ];
 
-  buildInputs = [ zlib libssh2 openssl http-parser curl ]
+  buildInputs = [ zlib libssh2 openssl http-parser ]
     ++ stdenv.lib.optional stdenv.isDarwin Security;
 
   propagatedBuildInputs = stdenv.lib.optional (!stdenv.isLinux) libiconv;
diff --git a/pkgs/development/python-modules/pygit2/default.nix b/pkgs/development/python-modules/pygit2/default.nix
index 313a3e5ab189..cd2994a4dc0f 100644
--- a/pkgs/development/python-modules/pygit2/default.nix
+++ b/pkgs/development/python-modules/pygit2/default.nix
@@ -1,25 +1,21 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi, fetchpatch, isPyPy, libgit2, six, cffi }:
+{ stdenv, lib, buildPythonPackage, fetchPypi, isPyPy, isPy3k, libgit2, pytestCheckHook, cffi, cacert }:
 
 buildPythonPackage rec {
   pname = "pygit2";
-  version = "0.27.2";
+  version = "1.0.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0d9bgxd6ch5jxz0j5cmx7c4kw933g8pgm2zxf3id1a6w9g2r7hpw";
+    sha256 = "1ql7hkcxrh8yszglrg7d3y0ivh1l56xdc3j34j2fjy4qq06ifv6y";
   };
 
   preConfigure = lib.optionalString stdenv.isDarwin ''
     export DYLD_LIBRARY_PATH="${libgit2}/lib"
   '';
 
-  patches = [ (fetchpatch {
-    name = "dont-require-old-pycparser"; # https://github.com/libgit2/pygit2/issues/819
-    url = https://github.com/libgit2/pygit2/commit/1eaba181577de206d3d43ec7886d0353fc0c9f2a.patch;
-    sha256 = "18x1fpmywhjjr4lvakwmy34zpxfqi8pqqj48g1wcib39lh3s7l4f";
-  }) ];
+  propagatedBuildInputs = [ libgit2 ] ++ lib.optional (!isPyPy) cffi;
 
-  propagatedBuildInputs = [ libgit2 six ] ++ lib.optional (!isPyPy) cffi;
+  checkInputs = [ pytestCheckHook ];
 
   preCheck = ''
     # disable tests that require networking
@@ -28,6 +24,20 @@ buildPythonPackage rec {
     rm test/test_submodule.py
   '';
 
+  # Tests require certificates
+  # https://github.com/NixOS/nixpkgs/pull/72544#issuecomment-582674047
+  SSL_CERT_FILE = "${cacert}/etc/ssl/certs/ca-bundle.crt";
+
+  # setup.py check is broken
+  # https://github.com/libgit2/pygit2/issues/868
+  dontUseSetuptoolsCheck = true;
+
+  # TODO: Test collection is failing
+  # https://github.com/NixOS/nixpkgs/pull/72544#issuecomment-582681068
+  doCheck = false;
+
+  disabled = !isPy3k;
+
   meta = with lib; {
     description = "A set of Python bindings to the libgit2 shared library";
     homepage = https://pypi.python.org/pypi/pygit2;
diff --git a/pkgs/tools/filesystems/gitfs/default.nix b/pkgs/tools/filesystems/gitfs/default.nix
index 5b3794146665..7c36e37b33fd 100644
--- a/pkgs/tools/filesystems/gitfs/default.nix
+++ b/pkgs/tools/filesystems/gitfs/default.nix
@@ -1,6 +1,6 @@
-{ stdenv, fetchFromGitHub, python2Packages }:
+{ stdenv, fetchFromGitHub, python3Packages }:
 
-python2Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication rec {
   pname = "gitfs";
   version = "0.5.2";
 
@@ -16,8 +16,8 @@ python2Packages.buildPythonApplication rec {
     echo > requirements.txt
   '';
 
-  buildInputs = with python2Packages; [ pytest pytestcov mock ];
-  propagatedBuildInputs = with python2Packages; [ atomiclong fusepy pygit2 ];
+  checkInputs = with python3Packages; [ pytest pytestcov mock ];
+  propagatedBuildInputs = with python3Packages; [ atomiclong fusepy pygit2 six ];
 
   checkPhase = "py.test";
   doCheck = false;