diff --git a/pkgs/applications/science/math/pari/default.nix b/pkgs/applications/science/math/pari/default.nix
index ee3caaff1277..44647ce81398 100644
--- a/pkgs/applications/science/math/pari/default.nix
+++ b/pkgs/applications/science/math/pari/default.nix
@@ -15,7 +15,7 @@ assert withThread -> libpthreadstubs != null;
 
 stdenv.mkDerivation rec {
   pname = "pari";
-  version = "2.15.3";
+  version = "2.15.4";
 
   src = fetchurl {
     urls = [
@@ -23,19 +23,9 @@ stdenv.mkDerivation rec {
       # old versions are at the url below
       "https://pari.math.u-bordeaux.fr/pub/pari/OLD/${lib.versions.majorMinor version}/${pname}-${version}.tar.gz"
     ];
-    hash = "sha256-rfWlhjjNr9cqi0i8n0RJcrIzKcjVRaHT7Ru+sbZWkmg=";
+    hash = "sha256-w1Rb/uDG37QLd/tLurr5mdguYAabn20ovLbPAEyMXA8=";
   };
 
-  patches = [
-    # https://pari.math.u-bordeaux.fr/cgi-bin/bugreport.cgi?bug=2466
-    (fetchpatch {
-      name = "incorrect-result-from-qfbclassno.patch";
-      url = "https://pari.math.u-bordeaux.fr/cgi-bin/gitweb.cgi?p=pari.git;a=commitdiff_plain;h=7ca0c2eae87def89fa7253c60e4791a8ef26629d";
-      excludes = [ "src/test/32/quadclassunit" "CHANGES" ];
-      hash = "sha256-CQRkIYDFMrWHCoSWGsIydPjGk3w09zzghajlNuq29Jk=";
-    })
-  ];
-
   buildInputs = [
     gmp
     libX11