diff --git a/pkgs/development/libraries/physics/lhapdf/default.nix b/pkgs/development/libraries/physics/lhapdf/default.nix
index a8d1e5ddded2..5fcba8724184 100644
--- a/pkgs/development/libraries/physics/lhapdf/default.nix
+++ b/pkgs/development/libraries/physics/lhapdf/default.nix
@@ -9,11 +9,11 @@
 
 stdenv.mkDerivation rec {
   pname = "lhapdf";
-  version = "6.5.4";
+  version = "6.5.5";
 
   src = fetchurl {
     url = "https://www.hepforge.org/archive/lhapdf/LHAPDF-${version}.tar.gz";
-    sha256 = "sha256-JEOksyzDsFl8gki9biVwOs6ckaeiU8X2CxtUKO+chp4=";
+    sha256 = "sha256-ZB1eoJQreeREfhXlozSR/zxwMtcdYYEZk14UrSf146U=";
   };
 
   # The Apple SDK only exports locale_t from xlocale.h whereas glibc