diff --git a/pkgs/applications/science/math/pari/default.nix b/pkgs/applications/science/math/pari/default.nix
index 4c0032e6c8b3..41dff3adede5 100644
--- a/pkgs/applications/science/math/pari/default.nix
+++ b/pkgs/applications/science/math/pari/default.nix
@@ -1,6 +1,7 @@
 { lib
 , stdenv
 , fetchurl
+, fetchpatch
 , gmp
 , libX11
 , libpthreadstubs
@@ -25,6 +26,15 @@ stdenv.mkDerivation rec {
     hash = "sha256-sEYoER7iKHZRmksc2vsy/rqjTq+iT56B9Y+NBX++4N0=";
   };
 
+  patches = [
+    # https://pari.math.u-bordeaux.fr/cgi-bin/bugreport.cgi?bug=2441
+    (fetchpatch {
+      name = "fix-find_isogenous_from_Atkin.patch";
+      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/pari/patches/bug2441.patch?id=9.8.rc0";
+      hash = "sha256-DvOUFlFDnopN+MJY6GYRPNabuoHPFch/nNn+49ygznc=";
+    })
+  ];
+
   buildInputs = [
     gmp
     libX11