diff --git a/pkgs/development/libraries/libgit2/default.nix b/pkgs/development/libraries/libgit2/default.nix
index f5b0ff72ff0d..3d7b6ff9e012 100644
--- a/pkgs/development/libraries/libgit2/default.nix
+++ b/pkgs/development/libraries/libgit2/default.nix
@@ -19,14 +19,14 @@
 
 stdenv.mkDerivation rec {
   pname = "libgit2";
-  version = "1.6.3";
+  version = "1.6.4";
   # also check the following packages for updates: python3Packages.pygit2 and libgit2-glib
 
   src = fetchFromGitHub {
     owner = "libgit2";
     repo = "libgit2";
     rev = "v${version}";
-    hash = "sha256-MiEw5UbmcPfW0SlqLdYEnBdOp29YIVdKXE588uUjqck=";
+    hash = "sha256-lW3mokVKsbknVj2xsxEbeZH4IdKZ0aIgGutzenS0Eh0=";
   };
 
   cmakeFlags = [
diff --git a/pkgs/development/python-modules/pygit2/default.nix b/pkgs/development/python-modules/pygit2/default.nix
index a9b9ed15b6ba..ba8b2577986a 100644
--- a/pkgs/development/python-modules/pygit2/default.nix
+++ b/pkgs/development/python-modules/pygit2/default.nix
@@ -6,7 +6,7 @@
 , cffi
 , fetchPypi
 , isPyPy
-, libgit2_1_5
+, libgit2
 , pycparser
 , pytestCheckHook
 , pythonOlder
@@ -14,22 +14,22 @@
 
 buildPythonPackage rec {
   pname = "pygit2";
-  version = "1.11.1";
+  version = "1.12.0";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-eT9YP9M2IPCsODdtsPV3aO8pIribRZ51saxEA3frZOw=";
+    hash = "sha256-6UQNCGZeNSeJiZOVkKU/N6k46tpPlEaESTCqLuMNc74=";
   };
 
   preConfigure = lib.optionalString stdenv.isDarwin ''
-    export DYLD_LIBRARY_PATH="${libgit2_1_5}/lib"
+    export DYLD_LIBRARY_PATH="${libgit2}/lib"
   '';
 
   buildInputs = [
-    libgit2_1_5
+    libgit2
   ];
 
   propagatedBuildInputs = [