diff --git a/pkgs/development/python-modules/fpylll/default.nix b/pkgs/development/python-modules/fpylll/default.nix
index 7bc4ed82fea7..e23351d3da6d 100644
--- a/pkgs/development/python-modules/fpylll/default.nix
+++ b/pkgs/development/python-modules/fpylll/default.nix
@@ -1,5 +1,6 @@
 { lib
 , fetchFromGitHub
+, fetchpatch
 , buildPythonPackage
 , pkgconfig
 , gmp
@@ -14,15 +15,29 @@
 
 buildPythonPackage rec {
   pname = "fpylll";
-  version = "0.5.0dev";
+  version = "0.5.1dev";
 
   src = fetchFromGitHub {
     owner = "fplll";
     repo = "fpylll";
     rev = version;
-    sha256 = "091zqgsqd5cqma1hvimkq5xpr9f1jw80v9m2fr6k9hvssqjzgnab";
+    sha256 = "15vdfgx448mr1nf054h7lr2j3dd35fsfhikqzrh9zsng8n12hxa5";
   };
 
+  patches = [
+    # two patches to fix the testsuite on aarch64 (https://github.com/fplll/fpylll/issues/162)
+    (fetchpatch {
+      url = "https://github.com/fplll/fpylll/commit/d5809a8fdb86b2693b1fa94e655bbbe4ad80e286.patch";
+      name = "less-precision-in-tests.patch";
+      sha256 = "0vkvi25nwwvk5r4a4xmkbf060di4hjq32bys75l2hsaysxmk93nz";
+    })
+    (fetchpatch {
+      url = "https://github.com/fplll/fpylll/commit/b5b146a010d50da219a313adc4b6f7deddcc146b.patch";
+      name = "dont-hardcode-precision.patch";
+      sha256 = "1rsbwh90i1j5p2rp6jd5n25v1jzw1n8728fzz1lhb91zmk0hlxc9";
+    })
+  ];
+
   buildInputs = [
     gmp
     pari