diff --git a/pkgs/development/libraries/git2/default.nix b/pkgs/development/libraries/git2/default.nix
index ed32f68635b0..873865cdf837 100644
--- a/pkgs/development/libraries/git2/default.nix
+++ b/pkgs/development/libraries/git2/default.nix
@@ -5,17 +5,20 @@
 
 stdenv.mkDerivation rec {
   pname = "libgit2";
-  version = "0.28.4";
+  version = "0.99.0";
   # keep the version in sync with python3.pkgs.pygit2 and libgit2-glib
 
   src = fetchFromGitHub {
     owner = "libgit2";
     repo = "libgit2";
     rev = "v${version}";
-    sha256 = "171b25aym4q88bidc4c76y4l6jmdwifm3q9zjqsll0wjhlkycfy1";
+    sha256 = "0qxzv49ip378g1n7hrbifb9c6pys2kj1hnxcafmbb94gj3pgd9kg";
   };
 
-  cmakeFlags = [ "-DTHREADSAFE=ON" ];
+  cmakeFlags = [
+    "-DTHREADSAFE=ON"
+    "-DUSE_HTTP_PARSER=system"
+  ];
 
   nativeBuildInputs = [ cmake python3 pkgconfig ];
 
@@ -30,7 +33,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "The Git linkable library";
-    homepage = https://libgit2.github.com/;
+    homepage = "https://libgit2.github.com/";
     license = stdenv.lib.licenses.gpl2;
     platforms = with stdenv.lib.platforms; all;
   };
diff --git a/pkgs/development/libraries/libgit2-glib/default.nix b/pkgs/development/libraries/libgit2-glib/default.nix
index d5edefc5d54b..f3e07b509176 100644
--- a/pkgs/development/libraries/libgit2-glib/default.nix
+++ b/pkgs/development/libraries/libgit2-glib/default.nix
@@ -3,11 +3,11 @@
 
 stdenv.mkDerivation rec {
   pname = "libgit2-glib";
-  version = "0.28.0.1";
+  version = "0.99.0.1";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "0a0g7aw66rfgnqr4z7fgbk5zzcjq66m4rp8v4val3a212941h0g7";
+    sha256 = "1pmrcnsa7qdda73c3dxf47733mwprmj5ljpw3acxbj6r8k27anp0";
   };
 
   postPatch = ''
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A glib wrapper library around the libgit2 git access library";
-    homepage = https://wiki.gnome.org/Projects/Libgit2-glib;
+    homepage = "https://wiki.gnome.org/Projects/Libgit2-glib";
     license = licenses.lgpl21;
     maintainers = gnome3.maintainers;
     platforms = platforms.linux;
diff --git a/pkgs/development/python-modules/pygit2/default.nix b/pkgs/development/python-modules/pygit2/default.nix
index cd2994a4dc0f..013ce9ae9162 100644
--- a/pkgs/development/python-modules/pygit2/default.nix
+++ b/pkgs/development/python-modules/pygit2/default.nix
@@ -1,19 +1,25 @@
-{ stdenv, lib, buildPythonPackage, fetchPypi, isPyPy, isPy3k, libgit2, pytestCheckHook, cffi, cacert }:
+{ stdenv, lib, buildPythonPackage, fetchPypi, isPyPy, isPy3k, libgit2, cached-property, pytestCheckHook, cffi, cacert }:
 
 buildPythonPackage rec {
   pname = "pygit2";
-  version = "1.0.3";
+  version = "1.1.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1ql7hkcxrh8yszglrg7d3y0ivh1l56xdc3j34j2fjy4qq06ifv6y";
+    sha256 = "klXVB9XYe/It/VeZeniQgBAzH8IfmoPsoSGlP2V76zw=";
   };
 
   preConfigure = lib.optionalString stdenv.isDarwin ''
     export DYLD_LIBRARY_PATH="${libgit2}/lib"
   '';
 
-  propagatedBuildInputs = [ libgit2 ] ++ lib.optional (!isPyPy) cffi;
+  buildInputs = [
+    libgit2
+  ];
+
+  propagatedBuildInputs = [
+    cached-property
+  ] ++ lib.optional (!isPyPy) cffi;
 
   checkInputs = [ pytestCheckHook ];