diff --git a/pkgs/development/libraries/sundials/default.nix b/pkgs/development/libraries/sundials/default.nix
index d6d2b3bbe6df..3093c5330a88 100644
--- a/pkgs/development/libraries/sundials/default.nix
+++ b/pkgs/development/libraries/sundials/default.nix
@@ -12,13 +12,13 @@
 
 stdenv.mkDerivation rec {
   pname = "sundials";
-  version = "6.2.0";
+  version = "6.3.0";
 
   outputs = [ "out" "examples" ];
 
   src = fetchurl {
     url = "https://github.com/LLNL/sundials/releases/download/v${version}/sundials-${version}.tar.gz";
-    hash = "sha256-GV1Vk3cvxIP2Pwh5TXnkurMMLsWObOSw+2vMDgxI8x0=";
+    hash = "sha256-iaIr6oIP8lCqcjn2NKsH+jTv4dLc/eKcyNOvEUVboqc=";
   };
 
   nativeBuildInputs = [
@@ -66,10 +66,10 @@ stdenv.mkDerivation rec {
   #
   # build error:
   #
-  # /private/tmp/nix-build-sundials-6.2.0.drv-0/ccD2dUtR.s:21:15: error: index must be an integer in range [-256, 255].
+  # /private/tmp/nix-build-sundials-6.3.0.drv-0/ccD2dUtR.s:21:15: error: index must be an integer in range [-256, 255].
   #         ldr     x0, [x0, ___stack_chk_guard];momd
   #                          ^
-  # /private/tmp/nix-build-sundials-6.2.0.drv-0/ccD2dUtR.s:46:15: error: index must be an integer in range [-256, 255].
+  # /private/tmp/nix-build-sundials-6.3.0.drv-0/ccD2dUtR.s:46:15: error: index must be an integer in range [-256, 255].
   #         ldr     x0, [x0, ___stack_chk_guard];momd
   #
   # See also a proposed solution: https://github.com/NixOS/nixpkgs/pull/151983